docker stuff

Dockerfile

@@ -1,10 +1,42 @@
 # https://hub.docker.com/_/microsoft-dotnet-core
-FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
+#FROM mcr.microsoft.com/dotnet/sdk:5.0 AS build
+# FROM alpine AS build
+#ARG REPO=mcr.microsoft.com/dotnet/aspnet
+#FROM $REPO:5.0-alpine3.12-amd64
 
-WORKDIR /installer
-COPY ./dotnet-install.sh ./dotnet-install.sh
-RUN chmod +x dotnet-install.sh
-RUN ./dotnet-install.sh --channel 3.1 
+#ENV \
+#    # Unset ASPNETCORE_URLS from aspnet base image
+#    ASPNETCORE_URLS= \
+#    DOTNET_SDK_VERSION=5.0.100 \
+#    # Disable the invariant mode (set in base image)
+#    DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false \
+#    # Enable correct mode for dotnet watch (only mode supported in a container)
+#    DOTNET_USE_POLLING_FILE_WATCHER=true \
+#    # Skip extraction of XML docs - generally not useful within an image/container - helps performance
+#    NUGET_XMLDOC_MODE=skip \
+#    # PowerShell telemetry for docker image usage
+#    POWERSHELL_DISTRIBUTION_CHANNEL=PSDocker-DotnetSDK-Alpine-3.12##
+
+#RUN apk add --no-cache \
+#    curl \
+#    icu-libs \
+#    wget \
+#    git \
+#    bash
+#
+#WORKDIR /installer
+#RUN wget https://dot.net/v1/dotnet-install.sh
+##COPY ./dotnet-install.sh ./dotnet-install.sh
+#RUN chmod +x dotnet-install.sh
+#RUN ./dotnet-install.sh --channel 3.1 
+#RUN ./dotnet-install.sh --channel 5.0
+#RUN export PATH=~/.dotnet:$PATH 
+#RUN export DOTNET_ROOT=~/.dotnet
+#RUN export PATH=$PATH:~/.dotnet
+##ENV PATH="${PATH}:~/.dotnet"
+#ENV PATH="~/.dotnet:${PATH}"    
+
+#RUN which dotnet
 # # Install .NET CLI dependencies
 # RUN apt-get update \
 #     && apt-get install -y --no-install-recommends \
@@ -28,6 +60,30 @@ RUN ./dotnet-install.sh --channel 3.1
 #     && ln -s /usr/share/dotnet/dotnet /usr/bin/dotnet \
 #     # Trigger first run experience by running arbitrary cmd
 #     && dotnet help
+FROM ubuntu:groovy as build
+RUN export DEBIAN_FRONTEND=noninteractive \
+    && apt-get update \
+    # Install prerequisites
+    && apt-get install -y --no-install-recommends \
+       wget \
+       ca-certificates \
+    \
+    # Install Microsoft package feed
+    && wget -q https://packages.microsoft.com/config/ubuntu/20.10/packages-microsoft-prod.deb -O packages-microsoft-prod.deb \
+    && dpkg -i packages-microsoft-prod.deb \
+    && rm packages-microsoft-prod.deb \
+    \
+    # Install .NET
+    && apt-get update \
+    && apt-get install -y --no-install-recommends \
+        dotnet-sdk-5.0 \
+        dotnet-sdk-3.1 \
+        libpng12 \
+    \
+    # Cleanup
+    && rm -rf /var/lib/apt/lists/*
+
+
 WORKDIR /src
 
 # copy csproj and restore as distinct layers