diff --git a/.dockerignore b/.dockerignore
index 0aed759..ef8d40f 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -9,4 +9,4 @@ Dockerfile*
 **/*.md
 **/*.ps1
 **/*.cmd
-**/*.sh
\ No newline at end of file
+#**/*.sh
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..37441be
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "files.eol": "\n"
+}
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index e6c5256..4c4ed20 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,33 @@
 # https://hub.docker.com/_/microsoft-dotnet-core
 FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
+
+WORKDIR /installer
+COPY ./dotnet-install.sh ./dotnet-install.sh
+RUN chmod +x dotnet-install.sh
+RUN ./dotnet-install.sh --channel 3.1 
+# # Install .NET CLI dependencies
+# RUN apt-get update \
+#     && apt-get install -y --no-install-recommends \
+#         libc6 \
+#         libgcc1 \
+#         libgssapi-krb5-2 \
+#         libicu60 \
+#         libssl1.1 \ 
+#         libstdc++6 \
+#         zlib1g \
+#     && rm -rf /var/lib/apt/lists/*
+
+# # Install .NET Core SDK
+# RUN dotnet_sdk_version=3.1.404 \
+#     && curl -SL --output dotnet.tar.gz https://dotnetcli.azureedge.net/dotnet/Sdk/$dotnet_sdk_version/dotnet-sdk-$dotnet_sdk_version-linux-x64.tar.gz \
+#     && dotnet_sha512='94d8eca3b4e2e6c36135794330ab196c621aee8392c2545a19a991222e804027f300d8efd152e9e4893c4c610d6be8eef195e30e6f6675285755df1ea49d3605' \
+#     && echo "$dotnet_sha512 dotnet.tar.gz" | sha512sum -c - \
+#     && mkdir -p /usr/share/dotnet \
+#     && tar -ozxf dotnet.tar.gz -C /usr/share/dotnet \
+#     && rm dotnet.tar.gz \
+#     && ln -s /usr/share/dotnet/dotnet /usr/bin/dotnet \
+#     # Trigger first run experience by running arbitrary cmd
+#     && dotnet help
 WORKDIR /src
 
 # copy csproj and restore as distinct layers
diff --git a/dotnet-install.sh b/dotnet-install.sh
new file mode 100644
index 0000000..6525339
--- /dev/null
+++ b/dotnet-install.sh
@@ -0,0 +1,1108 @@
+#!/usr/bin/env bash
+# Copyright (c) .NET Foundation and contributors. All rights reserved.
+# Licensed under the MIT license. See LICENSE file in the project root for full license information.
+#
+
+# Stop script on NZEC
+set -e
+# Stop script if unbound variable found (use ${var:-} if intentional)
+set -u
+# By default cmd1 | cmd2 returns exit code of cmd2 regardless of cmd1 success
+# This is causing it to fail
+set -o pipefail
+
+# Use in the the functions: eval $invocation
+invocation='say_verbose "Calling: ${yellow:-}${FUNCNAME[0]} ${green:-}$*${normal:-}"'
+
+# standard output may be used as a return value in the functions
+# we need a way to write text on the screen in the functions so that
+# it won't interfere with the return value.
+# Exposing stream 3 as a pipe to standard output of the script itself
+exec 3>&1
+
+# Setup some colors to use. These need to work in fairly limited shells, like the Ubuntu Docker container where there are only 8 colors.
+# See if stdout is a terminal
+if [ -t 1 ] && command -v tput > /dev/null; then
+    # see if it supports colors
+    ncolors=$(tput colors)
+    if [ -n "$ncolors" ] && [ $ncolors -ge 8 ]; then
+        bold="$(tput bold       || echo)"
+        normal="$(tput sgr0     || echo)"
+        black="$(tput setaf 0   || echo)"
+        red="$(tput setaf 1     || echo)"
+        green="$(tput setaf 2   || echo)"
+        yellow="$(tput setaf 3  || echo)"
+        blue="$(tput setaf 4    || echo)"
+        magenta="$(tput setaf 5 || echo)"
+        cyan="$(tput setaf 6    || echo)"
+        white="$(tput setaf 7   || echo)"
+    fi
+fi
+
+say_warning() {
+    printf "%b\n" "${yellow:-}dotnet_install: Warning: $1${normal:-}"
+}
+
+say_err() {
+    printf "%b\n" "${red:-}dotnet_install: Error: $1${normal:-}" >&2
+}
+
+say() {
+    # using stream 3 (defined in the beginning) to not interfere with stdout of functions
+    # which may be used as return value
+    printf "%b\n" "${cyan:-}dotnet-install:${normal:-} $1" >&3
+}
+
+say_verbose() {
+    if [ "$verbose" = true ]; then
+        say "$1"
+    fi
+}
+
+# This platform list is finite - if the SDK/Runtime has supported Linux distribution-specific assets,
+#   then and only then should the Linux distribution appear in this list.
+# Adding a Linux distribution to this list does not imply distribution-specific support.
+get_legacy_os_name_from_platform() {
+    eval $invocation
+
+    platform="$1"
+    case "$platform" in
+        "centos.7")
+            echo "centos"
+            return 0
+            ;;
+        "debian.8")
+            echo "debian"
+            return 0
+            ;;
+        "debian.9")
+            echo "debian.9"
+            return 0
+            ;;
+        "fedora.23")
+            echo "fedora.23"
+            return 0
+            ;;
+        "fedora.24")
+            echo "fedora.24"
+            return 0
+            ;;
+        "fedora.27")
+            echo "fedora.27"
+            return 0
+            ;;
+        "fedora.28")
+            echo "fedora.28"
+            return 0
+            ;;
+        "opensuse.13.2")
+            echo "opensuse.13.2"
+            return 0
+            ;;
+        "opensuse.42.1")
+            echo "opensuse.42.1"
+            return 0
+            ;;
+        "opensuse.42.3")
+            echo "opensuse.42.3"
+            return 0
+            ;;
+        "rhel.7"*)
+            echo "rhel"
+            return 0
+            ;;
+        "ubuntu.14.04")
+            echo "ubuntu"
+            return 0
+            ;;
+        "ubuntu.16.04")
+            echo "ubuntu.16.04"
+            return 0
+            ;;
+        "ubuntu.16.10")
+            echo "ubuntu.16.10"
+            return 0
+            ;;
+        "ubuntu.18.04")
+            echo "ubuntu.18.04"
+            return 0
+            ;;
+        "alpine.3.4.3")
+            echo "alpine"
+            return 0
+            ;;
+    esac
+    return 1
+}
+
+get_linux_platform_name() {
+    eval $invocation
+
+    if [ -n "$runtime_id" ]; then
+        echo "${runtime_id%-*}"
+        return 0
+    else
+        if [ -e /etc/os-release ]; then
+            . /etc/os-release
+            echo "$ID${VERSION_ID:+.${VERSION_ID}}"
+            return 0
+        elif [ -e /etc/redhat-release ]; then
+            local redhatRelease=$(</etc/redhat-release)
+            if [[ $redhatRelease == "CentOS release 6."* || $redhatRelease == "Red Hat Enterprise Linux "*" release 6."* ]]; then
+                echo "rhel.6"
+                return 0
+            fi
+        fi
+    fi
+
+    say_verbose "Linux specific platform name and version could not be detected: UName = $uname"
+    return 1
+}
+
+is_musl_based_distro() {
+    (ldd --version 2>&1 || true) | grep -q musl
+}
+
+get_current_os_name() {
+    eval $invocation
+
+    local uname=$(uname)
+    if [ "$uname" = "Darwin" ]; then
+        echo "osx"
+        return 0
+    elif [ "$uname" = "FreeBSD" ]; then
+        echo "freebsd"
+        return 0
+    elif [ "$uname" = "Linux" ]; then
+        local linux_platform_name
+        linux_platform_name="$(get_linux_platform_name)" || { echo "linux" && return 0 ; }
+
+        if [ "$linux_platform_name" = "rhel.6" ]; then
+            echo $linux_platform_name
+            return 0
+        elif is_musl_based_distro; then
+            echo "linux-musl"
+            return 0
+        else
+            echo "linux"
+            return 0
+        fi
+    fi
+
+    say_err "OS name could not be detected: UName = $uname"
+    return 1
+}
+
+get_legacy_os_name() {
+    eval $invocation
+
+    local uname=$(uname)
+    if [ "$uname" = "Darwin" ]; then
+        echo "osx"
+        return 0
+    elif [ -n "$runtime_id" ]; then
+        echo $(get_legacy_os_name_from_platform "${runtime_id%-*}" || echo "${runtime_id%-*}")
+        return 0
+    else
+        if [ -e /etc/os-release ]; then
+            . /etc/os-release
+            os=$(get_legacy_os_name_from_platform "$ID${VERSION_ID:+.${VERSION_ID}}" || echo "")
+            if [ -n "$os" ]; then
+                echo "$os"
+                return 0
+            fi
+        fi
+    fi
+
+    say_verbose "Distribution specific OS name and version could not be detected: UName = $uname"
+    return 1
+}
+
+machine_has() {
+    eval $invocation
+
+    hash "$1" > /dev/null 2>&1
+    return $?
+}
+
+
+check_min_reqs() {
+    local hasMinimum=false
+    if machine_has "curl"; then
+        hasMinimum=true
+    elif machine_has "wget"; then
+        hasMinimum=true
+    fi
+
+    if [ "$hasMinimum" = "false" ]; then
+        say_err "curl (recommended) or wget are required to download dotnet. Install missing prerequisite to proceed."
+        return 1
+    fi
+    return 0
+}
+
+# args:
+# input - $1
+to_lowercase() {
+    #eval $invocation
+
+    echo "$1" | tr '[:upper:]' '[:lower:]'
+    return 0
+}
+
+# args:
+# input - $1
+remove_trailing_slash() {
+    #eval $invocation
+
+    local input="${1:-}"
+    echo "${input%/}"
+    return 0
+}
+
+# args:
+# input - $1
+remove_beginning_slash() {
+    #eval $invocation
+
+    local input="${1:-}"
+    echo "${input#/}"
+    return 0
+}
+
+# args:
+# root_path - $1
+# child_path - $2 - this parameter can be empty
+combine_paths() {
+    eval $invocation
+
+    # TODO: Consider making it work with any number of paths. For now:
+    if [ ! -z "${3:-}" ]; then
+        say_err "combine_paths: Function takes two parameters."
+        return 1
+    fi
+
+    local root_path="$(remove_trailing_slash "$1")"
+    local child_path="$(remove_beginning_slash "${2:-}")"
+    say_verbose "combine_paths: root_path=$root_path"
+    say_verbose "combine_paths: child_path=$child_path"
+    echo "$root_path/$child_path"
+    return 0
+}
+
+get_machine_architecture() {
+    eval $invocation
+
+    if command -v uname > /dev/null; then
+        CPUName=$(uname -m)
+        case $CPUName in
+        armv7l)
+            echo "arm"
+            return 0
+            ;;
+        aarch64)
+            echo "arm64"
+            return 0
+            ;;
+        esac
+    fi
+
+    # Always default to 'x64'
+    echo "x64"
+    return 0
+}
+
+# args:
+# architecture - $1
+get_normalized_architecture_from_architecture() {
+    eval $invocation
+
+    local architecture="$(to_lowercase "$1")"
+    case "$architecture" in
+        \<auto\>)
+            echo "$(get_normalized_architecture_from_architecture "$(get_machine_architecture)")"
+            return 0
+            ;;
+        amd64|x64)
+            echo "x64"
+            return 0
+            ;;
+        arm)
+            echo "arm"
+            return 0
+            ;;
+        arm64)
+            echo "arm64"
+            return 0
+            ;;
+    esac
+
+    say_err "Architecture \`$architecture\` not supported. If you think this is a bug, report it at https://github.com/dotnet/install-scripts/issues"
+    return 1
+}
+
+# The version text returned from the feeds is a 1-line or 2-line string:
+# For the SDK and the dotnet runtime (2 lines):
+# Line 1: # commit_hash
+# Line 2: # 4-part version
+# For the aspnetcore runtime (1 line):
+# Line 1: # 4-part version
+
+# args:
+# version_text - stdin
+get_version_from_version_info() {
+    eval $invocation
+
+    cat | tail -n 1 | sed 's/\r$//'
+    return 0
+}
+
+# args:
+# install_root - $1
+# relative_path_to_package - $2
+# specific_version - $3
+is_dotnet_package_installed() {
+    eval $invocation
+
+    local install_root="$1"
+    local relative_path_to_package="$2"
+    local specific_version="${3//[$'\t\r\n']}"
+
+    local dotnet_package_path="$(combine_paths "$(combine_paths "$install_root" "$relative_path_to_package")" "$specific_version")"
+    say_verbose "is_dotnet_package_installed: dotnet_package_path=$dotnet_package_path"
+
+    if [ -d "$dotnet_package_path" ]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+# args:
+# azure_feed - $1
+# channel - $2
+# normalized_architecture - $3
+# coherent - $4
+get_latest_version_info() {
+    eval $invocation
+
+    local azure_feed="$1"
+    local channel="$2"
+    local normalized_architecture="$3"
+    local coherent="$4"
+
+    local version_file_url=null
+    if [[ "$runtime" == "dotnet" ]]; then
+        version_file_url="$uncached_feed/Runtime/$channel/latest.version"
+    elif [[ "$runtime" == "aspnetcore" ]]; then
+        version_file_url="$uncached_feed/aspnetcore/Runtime/$channel/latest.version"
+    elif [ -z "$runtime" ]; then
+        if [ "$coherent" = true ]; then
+            version_file_url="$uncached_feed/Sdk/$channel/latest.coherent.version"
+        else
+            version_file_url="$uncached_feed/Sdk/$channel/latest.version"
+        fi
+    else
+        say_err "Invalid value for \$runtime"
+        return 1
+    fi
+    say_verbose "get_latest_version_info: latest url: $version_file_url"
+
+    download "$version_file_url"
+    return $?
+}
+
+# args:
+# json_file - $1
+parse_jsonfile_for_version() {
+    eval $invocation
+
+    local json_file="$1"
+    if [ ! -f "$json_file" ]; then
+        say_err "Unable to find \`$json_file\`"
+        return 1
+    fi
+
+    sdk_section=$(cat $json_file | awk '/"sdk"/,/}/')
+    if [ -z "$sdk_section" ]; then
+        say_err "Unable to parse the SDK node in \`$json_file\`"
+        return 1
+    fi
+
+    sdk_list=$(echo $sdk_section | awk -F"[{}]" '{print $2}')
+    sdk_list=${sdk_list//[\" ]/}
+    sdk_list=${sdk_list//,/$'\n'}
+
+    local version_info=""
+    while read -r line; do
+      IFS=:
+      while read -r key value; do
+        if [[ "$key" == "version" ]]; then
+          version_info=$value
+        fi
+      done <<< "$line"
+    done <<< "$sdk_list"
+    if [ -z "$version_info" ]; then
+        say_err "Unable to find the SDK:version node in \`$json_file\`"
+        return 1
+    fi
+
+    unset IFS;
+    echo "$version_info"
+    return 0
+}
+
+# args:
+# azure_feed - $1
+# channel - $2
+# normalized_architecture - $3
+# version - $4
+# json_file - $5
+get_specific_version_from_version() {
+    eval $invocation
+
+    local azure_feed="$1"
+    local channel="$2"
+    local normalized_architecture="$3"
+    local version="$(to_lowercase "$4")"
+    local json_file="$5"
+
+    if [ -z "$json_file" ]; then
+        case "$version" in
+            latest)
+                local version_info
+                version_info="$(get_latest_version_info "$azure_feed" "$channel" "$normalized_architecture" false)" || return 1
+                say_verbose "get_specific_version_from_version: version_info=$version_info"
+                echo "$version_info" | get_version_from_version_info
+                return 0
+                ;;
+            coherent)
+                local version_info
+                version_info="$(get_latest_version_info "$azure_feed" "$channel" "$normalized_architecture" true)" || return 1
+                say_verbose "get_specific_version_from_version: version_info=$version_info"
+                echo "$version_info" | get_version_from_version_info
+                return 0
+                ;;
+            *)
+                echo "$version"
+                return 0
+                ;;
+        esac
+    else
+        local version_info
+        version_info="$(parse_jsonfile_for_version "$json_file")" || return 1
+        echo "$version_info"
+        return 0
+    fi
+}
+
+# args:
+# azure_feed - $1
+# channel - $2
+# normalized_architecture - $3
+# specific_version - $4
+construct_download_link() {
+    eval $invocation
+
+    local azure_feed="$1"
+    local channel="$2"
+    local normalized_architecture="$3"
+    local specific_version="${4//[$'\t\r\n']}"
+    local specific_product_version="$(get_specific_product_version "$1" "$4")"
+
+    local osname
+    osname="$(get_current_os_name)" || return 1
+
+    local download_link=null
+    if [[ "$runtime" == "dotnet" ]]; then
+        download_link="$azure_feed/Runtime/$specific_version/dotnet-runtime-$specific_product_version-$osname-$normalized_architecture.tar.gz"
+    elif [[ "$runtime" == "aspnetcore" ]]; then
+        download_link="$azure_feed/aspnetcore/Runtime/$specific_version/aspnetcore-runtime-$specific_product_version-$osname-$normalized_architecture.tar.gz"
+    elif [ -z "$runtime" ]; then
+        download_link="$azure_feed/Sdk/$specific_version/dotnet-sdk-$specific_product_version-$osname-$normalized_architecture.tar.gz"
+    else
+        return 1
+    fi
+
+    echo "$download_link"
+    return 0
+}
+
+# args:
+# azure_feed - $1
+# specific_version - $2
+get_specific_product_version() {
+    # If we find a 'productVersion.txt' at the root of any folder, we'll use its contents 
+    # to resolve the version of what's in the folder, superseding the specified version.
+    eval $invocation
+
+    local azure_feed="$1"
+    local specific_version="${2//[$'\t\r\n']}"
+    local specific_product_version=$specific_version
+
+    local download_link=null
+    if [[ "$runtime" == "dotnet" ]]; then
+        download_link="$azure_feed/Runtime/$specific_version/productVersion.txt${feed_credential}"
+    elif [[ "$runtime" == "aspnetcore" ]]; then
+        download_link="$azure_feed/aspnetcore/Runtime/$specific_version/productVersion.txt${feed_credential}"
+    elif [ -z "$runtime" ]; then
+        download_link="$azure_feed/Sdk/$specific_version/productVersion.txt${feed_credential}"
+    else
+        return 1
+    fi
+
+    if machine_has "curl"
+    then
+        specific_product_version=$(curl -s --fail "$download_link")
+        if [ $? -ne 0 ]
+        then
+            specific_product_version=$specific_version
+        fi
+    elif machine_has "wget"
+    then
+        specific_product_version=$(wget -qO- "$download_link")
+        if [ $? -ne 0 ]
+        then
+            specific_product_version=$specific_version
+        fi
+    fi
+    specific_product_version="${specific_product_version//[$'\t\r\n']}"
+
+    echo "$specific_product_version"
+    return 0
+}
+
+# args:
+# azure_feed - $1
+# channel - $2
+# normalized_architecture - $3
+# specific_version - $4
+construct_legacy_download_link() {
+    eval $invocation
+
+    local azure_feed="$1"
+    local channel="$2"
+    local normalized_architecture="$3"
+    local specific_version="${4//[$'\t\r\n']}"
+
+    local distro_specific_osname
+    distro_specific_osname="$(get_legacy_os_name)" || return 1
+
+    local legacy_download_link=null
+    if [[ "$runtime" == "dotnet" ]]; then
+        legacy_download_link="$azure_feed/Runtime/$specific_version/dotnet-$distro_specific_osname-$normalized_architecture.$specific_version.tar.gz"
+    elif [ -z "$runtime" ]; then
+        legacy_download_link="$azure_feed/Sdk/$specific_version/dotnet-dev-$distro_specific_osname-$normalized_architecture.$specific_version.tar.gz"
+    else
+        return 1
+    fi
+
+    echo "$legacy_download_link"
+    return 0
+}
+
+get_user_install_path() {
+    eval $invocation
+
+    if [ ! -z "${DOTNET_INSTALL_DIR:-}" ]; then
+        echo "$DOTNET_INSTALL_DIR"
+    else
+        echo "$HOME/.dotnet"
+    fi
+    return 0
+}
+
+# args:
+# install_dir - $1
+resolve_installation_path() {
+    eval $invocation
+
+    local install_dir=$1
+    if [ "$install_dir" = "<auto>" ]; then
+        local user_install_path="$(get_user_install_path)"
+        say_verbose "resolve_installation_path: user_install_path=$user_install_path"
+        echo "$user_install_path"
+        return 0
+    fi
+
+    echo "$install_dir"
+    return 0
+}
+
+# args:
+# relative_or_absolute_path - $1
+get_absolute_path() {
+    eval $invocation
+
+    local relative_or_absolute_path=$1
+    echo "$(cd "$(dirname "$1")" && pwd -P)/$(basename "$1")"
+    return 0
+}
+
+# args:
+# input_files - stdin
+# root_path - $1
+# out_path - $2
+# override - $3
+copy_files_or_dirs_from_list() {
+    eval $invocation
+
+    local root_path="$(remove_trailing_slash "$1")"
+    local out_path="$(remove_trailing_slash "$2")"
+    local override="$3"
+    local osname="$(get_current_os_name)"
+    local override_switch=$(
+        if [ "$override" = false ]; then
+            if [ "$osname" = "linux-musl" ]; then
+                printf -- "-u";
+            else
+                printf -- "-n";
+            fi
+        fi)
+
+    cat | uniq | while read -r file_path; do
+        local path="$(remove_beginning_slash "${file_path#$root_path}")"
+        local target="$out_path/$path"
+        if [ "$override" = true ] || (! ([ -d "$target" ] || [ -e "$target" ])); then
+            mkdir -p "$out_path/$(dirname "$path")"
+            if [ -d "$target" ]; then
+                rm -rf "$target"
+            fi
+            cp -R $override_switch "$root_path/$path" "$target"
+        fi
+    done
+}
+
+# args:
+# zip_path - $1
+# out_path - $2
+extract_dotnet_package() {
+    eval $invocation
+
+    local zip_path="$1"
+    local out_path="$2"
+
+    local temp_out_path="$(mktemp -d "$temporary_file_template")"
+
+    local failed=false
+    tar -xzf "$zip_path" -C "$temp_out_path" > /dev/null || failed=true
+
+    local folders_with_version_regex='^.*/[0-9]+\.[0-9]+[^/]+/'
+    find "$temp_out_path" -type f | grep -Eo "$folders_with_version_regex" | sort | copy_files_or_dirs_from_list "$temp_out_path" "$out_path" false
+    find "$temp_out_path" -type f | grep -Ev "$folders_with_version_regex" | copy_files_or_dirs_from_list "$temp_out_path" "$out_path" "$override_non_versioned_files"
+
+    rm -rf "$temp_out_path"
+
+    if [ "$failed" = true ]; then
+        say_err "Extraction failed"
+        return 1
+    fi
+}
+
+# args:
+# remote_path - $1
+# [out_path] - $2 - stdout if not provided
+download() {
+    eval $invocation
+
+    local remote_path="$1"
+    local out_path="${2:-}"
+
+    if [[ "$remote_path" != "http"* ]]; then
+        cp "$remote_path" "$out_path"
+        return $?
+    fi
+
+    local failed=false
+    if machine_has "curl"; then
+        downloadcurl "$remote_path" "$out_path" || failed=true
+    elif machine_has "wget"; then
+        downloadwget "$remote_path" "$out_path" || failed=true
+    else
+        failed=true
+    fi
+    if [ "$failed" = true ]; then
+        say_verbose "Download failed: $remote_path"
+        return 1
+    fi
+    return 0
+}
+
+downloadcurl() {
+    eval $invocation
+    local remote_path="$1"
+    local out_path="${2:-}"
+
+    # Append feed_credential as late as possible before calling curl to avoid logging feed_credential
+    remote_path="${remote_path}${feed_credential}"
+
+    local curl_options="--retry 20 --retry-delay 2 --connect-timeout 15 -sSL -f --create-dirs "
+    local failed=false
+    if [ -z "$out_path" ]; then
+        curl $curl_options "$remote_path" || failed=true
+    else
+        curl $curl_options -o "$out_path" "$remote_path" || failed=true
+    fi
+    if [ "$failed" = true ]; then
+        say_verbose "Curl download failed"
+        return 1
+    fi
+    return 0
+}
+
+downloadwget() {
+    eval $invocation
+    local remote_path="$1"
+    local out_path="${2:-}"
+
+    # Append feed_credential as late as possible before calling wget to avoid logging feed_credential
+    remote_path="${remote_path}${feed_credential}"
+    local wget_options="--tries 20 --waitretry 2 --connect-timeout 15 "
+    local failed=false
+    if [ -z "$out_path" ]; then
+        wget -q $wget_options -O - "$remote_path" || failed=true
+    else
+        wget $wget_options -O "$out_path" "$remote_path" || failed=true
+    fi
+    if [ "$failed" = true ]; then
+        say_verbose "Wget download failed"
+        return 1
+    fi
+    return 0
+}
+
+calculate_vars() {
+    eval $invocation
+    valid_legacy_download_link=true
+
+    normalized_architecture="$(get_normalized_architecture_from_architecture "$architecture")"
+    say_verbose "normalized_architecture=$normalized_architecture"
+
+    specific_version="$(get_specific_version_from_version "$azure_feed" "$channel" "$normalized_architecture" "$version" "$json_file")"
+    specific_product_version="$(get_specific_product_version "$azure_feed" "$specific_version")"
+    say_verbose "specific_version=$specific_version"
+    if [ -z "$specific_version" ]; then
+        say_err "Could not resolve version information."
+        return 1
+    fi
+
+    download_link="$(construct_download_link "$azure_feed" "$channel" "$normalized_architecture" "$specific_version")"
+    say_verbose "Constructed primary named payload URL: $download_link"
+
+    legacy_download_link="$(construct_legacy_download_link "$azure_feed" "$channel" "$normalized_architecture" "$specific_version")" || valid_legacy_download_link=false
+
+    if [ "$valid_legacy_download_link" = true ]; then
+        say_verbose "Constructed legacy named payload URL: $legacy_download_link"
+    else
+        say_verbose "Cound not construct a legacy_download_link; omitting..."
+    fi
+
+    install_root="$(resolve_installation_path "$install_dir")"
+    say_verbose "InstallRoot: $install_root"
+}
+
+install_dotnet() {
+    eval $invocation
+    local download_failed=false
+    local asset_name=''
+    local asset_relative_path=''
+
+    if [[ "$runtime" == "dotnet" ]]; then
+        asset_relative_path="shared/Microsoft.NETCore.App"
+        asset_name=".NET Core Runtime"
+    elif [[ "$runtime" == "aspnetcore" ]]; then
+        asset_relative_path="shared/Microsoft.AspNetCore.App"
+        asset_name="ASP.NET Core Runtime"
+    elif [ -z "$runtime" ]; then
+        asset_relative_path="sdk"
+        asset_name=".NET Core SDK"
+    else
+        say_err "Invalid value for \$runtime"
+        return 1
+    fi
+
+    #  Check if the SDK version is already installed.
+    if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$specific_version"; then
+        say "$asset_name version $specific_version is already installed."
+        return 0
+    fi
+
+    mkdir -p "$install_root"
+    zip_path="$(mktemp "$temporary_file_template")"
+    say_verbose "Zip path: $zip_path"
+
+    say "Downloading link: $download_link"
+
+    # Failures are normal in the non-legacy case for ultimately legacy downloads.
+    # Do not output to stderr, since output to stderr is considered an error.
+    download "$download_link" "$zip_path" 2>&1 || download_failed=true
+
+    #  if the download fails, download the legacy_download_link
+    if [ "$download_failed" = true ]; then
+        say "Cannot download: $download_link"
+
+        if [ "$valid_legacy_download_link" = true ]; then
+            download_failed=false
+            download_link="$legacy_download_link"
+            zip_path="$(mktemp "$temporary_file_template")"
+            say_verbose "Legacy zip path: $zip_path"
+            say "Downloading legacy link: $download_link"
+            download "$download_link" "$zip_path" 2>&1 || download_failed=true
+
+            if [ "$download_failed" = true ]; then
+                say "Cannot download: $download_link"
+            fi
+        fi
+    fi
+
+    if [ "$download_failed" = true ]; then
+        say_err "Could not find/download: \`$asset_name\` with version = $specific_version"
+        say_err "Refer to: https://aka.ms/dotnet-os-lifecycle for information on .NET Core support"
+        return 1
+    fi
+
+    say "Extracting zip from $download_link"
+    extract_dotnet_package "$zip_path" "$install_root"
+
+    #  Check if the SDK version is installed; if not, fail the installation.
+    # if the version contains "RTM" or "servicing"; check if a 'release-type' SDK version is installed.
+    if [[ $specific_version == *"rtm"* || $specific_version == *"servicing"* ]]; then
+        IFS='-'
+        read -ra verArr <<< "$specific_version"
+        release_version="${verArr[0]}"
+        unset IFS;
+        say_verbose "Checking installation: version = $release_version"
+        if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$release_version"; then
+            return 0
+        fi
+    fi
+
+    #  Check if the standard SDK version is installed.
+    say_verbose "Checking installation: version = $specific_product_version"
+    if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$specific_product_version"; then
+        return 0
+    fi
+
+    say_err "\`$asset_name\` with version = $specific_product_version failed to install with an unknown error."
+    return 1
+}
+
+args=("$@")
+
+local_version_file_relative_path="/.version"
+bin_folder_relative_path=""
+temporary_file_template="${TMPDIR:-/tmp}/dotnet.XXXXXXXXX"
+
+channel="LTS"
+version="Latest"
+json_file=""
+install_dir="<auto>"
+architecture="<auto>"
+dry_run=false
+no_path=false
+no_cdn=false
+azure_feed="https://dotnetcli.azureedge.net/dotnet"
+uncached_feed="https://dotnetcli.blob.core.windows.net/dotnet"
+feed_credential=""
+verbose=false
+runtime=""
+runtime_id=""
+override_non_versioned_files=true
+non_dynamic_parameters=""
+
+while [ $# -ne 0 ]
+do
+    name="$1"
+    case "$name" in
+        -c|--channel|-[Cc]hannel)
+            shift
+            channel="$1"
+            ;;
+        -v|--version|-[Vv]ersion)
+            shift
+            version="$1"
+            ;;
+        -i|--install-dir|-[Ii]nstall[Dd]ir)
+            shift
+            install_dir="$1"
+            ;;
+        --arch|--architecture|-[Aa]rch|-[Aa]rchitecture)
+            shift
+            architecture="$1"
+            ;;
+        --shared-runtime|-[Ss]hared[Rr]untime)
+            say_warning "The --shared-runtime flag is obsolete and may be removed in a future version of this script. The recommended usage is to specify '--runtime dotnet'."
+            if [ -z "$runtime" ]; then
+                runtime="dotnet"
+            fi
+            ;;
+        --runtime|-[Rr]untime)
+            shift
+            runtime="$1"
+            if [[ "$runtime" != "dotnet" ]] && [[ "$runtime" != "aspnetcore" ]]; then
+                say_err "Unsupported value for --runtime: '$1'. Valid values are 'dotnet' and 'aspnetcore'."
+                if [[ "$runtime" == "windowsdesktop" ]]; then
+                    say_err "WindowsDesktop archives are manufactured for Windows platforms only."
+                fi
+                exit 1
+            fi
+            ;;
+        --dry-run|-[Dd]ry[Rr]un)
+            dry_run=true
+            ;;
+        --no-path|-[Nn]o[Pp]ath)
+            no_path=true
+            non_dynamic_parameters+=" $name"
+            ;;
+        --verbose|-[Vv]erbose)
+            verbose=true
+            non_dynamic_parameters+=" $name"
+            ;;
+        --no-cdn|-[Nn]o[Cc]dn)
+            no_cdn=true
+            non_dynamic_parameters+=" $name"
+            ;;
+        --azure-feed|-[Aa]zure[Ff]eed)
+            shift
+            azure_feed="$1"
+            non_dynamic_parameters+=" $name "\""$1"\"""
+            ;;
+        --uncached-feed|-[Uu]ncached[Ff]eed)
+            shift
+            uncached_feed="$1"
+            non_dynamic_parameters+=" $name "\""$1"\"""
+            ;;
+        --feed-credential|-[Ff]eed[Cc]redential)
+            shift
+            feed_credential="$1"
+            non_dynamic_parameters+=" $name "\""$1"\"""
+            ;;
+        --runtime-id|-[Rr]untime[Ii]d)
+            shift
+            runtime_id="$1"
+            non_dynamic_parameters+=" $name "\""$1"\"""
+            ;;
+        --jsonfile|-[Jj][Ss]on[Ff]ile)
+            shift
+            json_file="$1"
+            ;;
+        --skip-non-versioned-files|-[Ss]kip[Nn]on[Vv]ersioned[Ff]iles)
+            override_non_versioned_files=false
+            non_dynamic_parameters+=" $name"
+            ;;
+        -?|--?|-h|--help|-[Hh]elp)
+            script_name="$(basename "$0")"
+            echo ".NET Tools Installer"
+            echo "Usage: $script_name [-c|--channel <CHANNEL>] [-v|--version <VERSION>] [-p|--prefix <DESTINATION>]"
+            echo "       $script_name -h|-?|--help"
+            echo ""
+            echo "$script_name is a simple command line interface for obtaining dotnet cli."
+            echo ""
+            echo "Options:"
+            echo "  -c,--channel <CHANNEL>         Download from the channel specified, Defaults to \`$channel\`."
+            echo "      -Channel"
+            echo "          Possible values:"
+            echo "          - Current - most current release"
+            echo "          - LTS - most current supported release"
+            echo "          - 2-part version in a format A.B - represents a specific release"
+            echo "              examples: 2.0; 1.0"
+            echo "          - Branch name"
+            echo "              examples: release/2.0.0; Master"
+            echo "          Note: The version parameter overrides the channel parameter."
+            echo "  -v,--version <VERSION>         Use specific VERSION, Defaults to \`$version\`."
+            echo "      -Version"
+            echo "          Possible values:"
+            echo "          - latest - most latest build on specific channel"
+            echo "          - coherent - most latest coherent build on specific channel"
+            echo "              coherent applies only to SDK downloads"
+            echo "          - 3-part version in a format A.B.C - represents specific version of build"
+            echo "              examples: 2.0.0-preview2-006120; 1.1.0"
+            echo "  -i,--install-dir <DIR>             Install under specified location (see Install Location below)"
+            echo "      -InstallDir"
+            echo "  --architecture <ARCHITECTURE>      Architecture of dotnet binaries to be installed, Defaults to \`$architecture\`."
+            echo "      --arch,-Architecture,-Arch"
+            echo "          Possible values: x64, arm, and arm64"
+            echo "  --runtime <RUNTIME>                Installs a shared runtime only, without the SDK."
+            echo "      -Runtime"
+            echo "          Possible values:"
+            echo "          - dotnet     - the Microsoft.NETCore.App shared runtime"
+            echo "          - aspnetcore - the Microsoft.AspNetCore.App shared runtime"
+            echo "  --dry-run,-DryRun                  Do not perform installation. Display download link."
+            echo "  --no-path, -NoPath                 Do not set PATH for the current process."
+            echo "  --verbose,-Verbose                 Display diagnostics information."
+            echo "  --azure-feed,-AzureFeed            Azure feed location. Defaults to $azure_feed, This parameter typically is not changed by the user."
+            echo "  --uncached-feed,-UncachedFeed      Uncached feed location. This parameter typically is not changed by the user."
+            echo "  --feed-credential,-FeedCredential  Azure feed shared access token. This parameter typically is not specified."
+            echo "  --skip-non-versioned-files         Skips non-versioned files if they already exist, such as the dotnet executable."
+            echo "      -SkipNonVersionedFiles"
+            echo "  --no-cdn,-NoCdn                    Disable downloading from the Azure CDN, and use the uncached feed directly."
+            echo "  --jsonfile <JSONFILE>              Determines the SDK version from a user specified global.json file."
+            echo "                                     Note: global.json must have a value for 'SDK:Version'"
+            echo "  --runtime-id                       Installs the .NET Tools for the given platform (use linux-x64 for portable linux)."
+            echo "      -RuntimeId"
+            echo "  -?,--?,-h,--help,-Help             Shows this help message"
+            echo ""
+            echo "Obsolete parameters:"
+            echo "  --shared-runtime                   The recommended alternative is '--runtime dotnet'."
+            echo "                                     This parameter is obsolete and may be removed in a future version of this script."
+            echo "                                     Installs just the shared runtime bits, not the entire SDK."
+            echo ""
+            echo "Install Location:"
+            echo "  Location is chosen in following order:"
+            echo "    - --install-dir option"
+            echo "    - Environmental variable DOTNET_INSTALL_DIR"
+            echo "    - $HOME/.dotnet"
+            exit 0
+            ;;
+        *)
+            say_err "Unknown argument \`$name\`"
+            exit 1
+            ;;
+    esac
+
+    shift
+done
+
+if [ "$no_cdn" = true ]; then
+    azure_feed="$uncached_feed"
+fi
+
+say "Note that the intended use of this script is for Continuous Integration (CI) scenarios, where:"
+say "- The SDK needs to be installed without user interaction and without admin rights."
+say "- The SDK installation doesn't need to persist across multiple CI runs."
+say "To set up a development environment or to run apps, use installers rather than this script. Visit https://dotnet.microsoft.com/download to get the installer.\n"
+
+check_min_reqs
+calculate_vars
+script_name=$(basename "$0")
+
+if [ "$dry_run" = true ]; then
+    say "Payload URLs:"
+    say "Primary named payload URL: $download_link"
+    if [ "$valid_legacy_download_link" = true ]; then
+        say "Legacy named payload URL: $legacy_download_link"
+    fi
+    repeatable_command="./$script_name --version "\""$specific_version"\"" --install-dir "\""$install_root"\"" --architecture "\""$normalized_architecture"\"""
+    if [[ "$runtime" == "dotnet" ]]; then
+        repeatable_command+=" --runtime "\""dotnet"\"""
+    elif [[ "$runtime" == "aspnetcore" ]]; then
+        repeatable_command+=" --runtime "\""aspnetcore"\"""
+    fi
+    repeatable_command+="$non_dynamic_parameters"
+    say "Repeatable invocation: $repeatable_command"
+    exit 0
+fi
+
+install_dotnet
+
+bin_path="$(get_absolute_path "$(combine_paths "$install_root" "$bin_folder_relative_path")")"
+if [ "$no_path" = false ]; then
+    say "Adding to current process PATH: \`$bin_path\`. Note: This change will be visible only when sourcing script."
+    export PATH="$bin_path":"$PATH"
+else
+    say "Binaries of dotnet can be found in $bin_path"
+fi
+
+say "Note that the script does not resolve dependencies during installation."
+say "To check the list of dependencies, go to https://docs.microsoft.com/dotnet/core/install, select your operating system and check the \"Dependencies\" section."
+say "Installation finished successfully."