From 3dcc2559657014044a438310de8a2a6ed68fb5ab Mon Sep 17 00:00:00 2001
From: Laura Hausmann <laura@hausmann.dev>
Date: Mon, 8 Jan 2024 18:32:33 +0100
Subject: [PATCH] Make Dockerfile support fast crossbuilds

---
 Dockerfile | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 4fa1a5f4..09c1829b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18 AS frontend
+FROM --platform=$BUILDPLATFORM alpine:3.18 AS frontend
 WORKDIR /frontend
 
 RUN apk add --no-cache --no-progress nodejs-current npm
@@ -15,21 +15,21 @@ RUN yarn --immutable && yarn build
 #TODO: why is a second yarn pass required here?
 
 FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/sdk:8.0-alpine AS backend
+ARG TARGETARCH
 WORKDIR /backend
 
 # copy csproj and restore as distinct layers
 COPY Iceshrimp.Backend/*.csproj .
-RUN dotnet restore -a amd64 #TODO: make this configurable but defaulting to the current architecture
+RUN dotnet restore -a $TARGETARCH
 
 # copy and build backend
 COPY Iceshrimp.Backend/. .
-RUN dotnet publish --no-restore -a amd64 -o /app #TODO: make this configurable but defaulting to the current architecture
+RUN dotnet publish --no-restore -a $TARGETARCH -o /app
 
 # Enable globalization and time zones:
 # https://github.com/dotnet/dotnet-docker/blob/main/samples/enable-globalization.md
 # final stage/image
 FROM mcr.microsoft.com/dotnet/aspnet:8.0-alpine-composite
-EXPOSE 8080
 WORKDIR /app
 COPY --from=backend /app .
 COPY --from=frontend /frontend/dist ./wwwroot