From e49ec42f30ff37e588c81b1d59381d195aafede4 Mon Sep 17 00:00:00 2001
From: Jeff Leung <jleung@v10networks.ca>
Date: Fri, 5 Jan 2024 15:58:28 -0800
Subject: [PATCH] Switch to Alpine Linux and enable multiarch builds

---
 AS1024.GeoFeed/Dockerfile | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/AS1024.GeoFeed/Dockerfile b/AS1024.GeoFeed/Dockerfile
index 04fbf23..f0fd5bc 100644
--- a/AS1024.GeoFeed/Dockerfile
+++ b/AS1024.GeoFeed/Dockerfile
@@ -1,22 +1,24 @@
 #See https://aka.ms/customizecontainer to learn how to customize your debug container and how Visual Studio uses this Dockerfile to build your images for faster debugging.
 
-FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
+FROM mcr.microsoft.com/dotnet/aspnet:8.0-alpine AS base
 USER app
 WORKDIR /app
 EXPOSE 8080
 
-FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
+FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS build
 ARG BUILD_CONFIGURATION=Release
+ARG TARGETARCH
 WORKDIR /src
 COPY ["AS1024.GeoFeed/AS1024.GeoFeed.csproj", "AS1024.GeoFeed/"]
-RUN dotnet restore "./AS1024.GeoFeed/./AS1024.GeoFeed.csproj"
+RUN dotnet restore "./AS1024.GeoFeed/./AS1024.GeoFeed.csproj" -a $TARGETARCH
 COPY . .
 WORKDIR "/src/AS1024.GeoFeed"
-RUN dotnet build "./AS1024.GeoFeed.csproj" -c $BUILD_CONFIGURATION -o /app/build
+RUN dotnet build "./AS1024.GeoFeed.csproj" -c $BUILD_CONFIGURATION -o /app/build -a $TARGETARCH
 
-FROM build AS publish
+FROM --platform=$BUILDPLATFORM build AS publish
 ARG BUILD_CONFIGURATION=Release
-RUN dotnet publish "./AS1024.GeoFeed.csproj" -c $BUILD_CONFIGURATION -o /app/publish /p:UseAppHost=false
+ARG TARGETARCH
+RUN dotnet publish "./AS1024.GeoFeed.csproj" -c $BUILD_CONFIGURATION -o /app/publish -a $TARGETARCH /p:UseAppHost=false
 
 FROM base AS final
 WORKDIR /app