Multiplatform GHC 9.8 image

.github/workflows/build-docker.yml

@@ -14,23 +14,40 @@ jobs:
 
     strategy:
       matrix:
-        ghc-version: 
-          - ghc-8.8.4 
-          - ghc-8.10.7
-          - ghc-9.0.2
-          - ghc-9.4.7
-          - ghc-9.4.8
-          - ghc-9.8.2
+        include:
+          - ghc-version: ghc-8.8.4
+            platform: linux/amd64
+          - ghc-version: ghc-8.10.7
+            platform: linux/amd64
+          - ghc-version: ghc-9.0.2
+            platform: linux/amd64
+          - ghc-version: ghc-9.4.7
+            platform: linux/amd64
+          - ghc-version: ghc-9.4.8
+            platform: linux/amd64
+          - ghc-version: ghc-9.8.2
+            platform: linux/amd64,linux/arm64
 
     steps:
-      - uses: actions/checkout@v2
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
 
-      - name: Build image
-        run: docker build ./${{ matrix.ghc-version }} --tag $IMAGE_NAME:${{ matrix.ghc-version }}
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
 
-      - name: Log into registry
-        run: echo "${{ secrets.DOCKER_HUB_TOKEN }}" | docker login -u fossabot --password-stdin
+      - uses: actions/checkout@v2
 
-      - name: Push image
+      - name: Login to Docker Hub
         if: ${{ github.ref == 'refs/heads/master' }}
-        run: docker push $IMAGE_NAME:${{ matrix.ghc-version }}
+        uses: docker/login-action@v3
+        with:
+          username: fossabot
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          platforms: ${{ matrix.platform }}
+          file: ${{ format('./{0}/Dockerfile', matrix.ghc-version) }}
+          push: ${{ github.ref == 'refs/heads/master' }}
+          tags: ${{ format('{0}:{1}', env.IMAGE_NAME, matrix.ghc-version) }}

ghc-9.8.2/Dockerfile

@@ -11,16 +11,45 @@ RUN apk --no-cache add binutils-gold curl gcc g++ git gmp-dev ncurses-dev ncurse
 # Install system deps for FOSSA CLI:
 RUN apk --no-cache add bash xz-libs xz-dev bzip2-dev bzip2-static upx curl jq
 
-ENV BOOTSTRAP_HASKELL_NONINTERACTIVE=1
-ENV BOOTSTRAP_HASKELL_MINIMAL=1
+ENV GHC_VERSION="9.8.2"
+
 ENV PATH="/root/.cabal/bin:/root/.ghcup/bin:$PATH"
-RUN curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
 
-# Delete the documentation, we don't really need it.
-RUN ghcup install ghc 9.8.2 && rm -rf "$HOME/.ghcup/share/doc/*"
+# There aren't official builds of ghcup that are built against musl for aarch64.
+# So the following two steps do the install manually on that platform.
+# They manually do the same steps that ghcup would.
+# ghcup should have support for this soon: https://github.com/haskell/ghcup-hs/issues/1012#issuecomment-2294829976
+# When that happens, you should be able to remove the 'else' branches and have the install work for all platforms.
+RUN <<EOF
+  if [ $(uname -m) != "aarch64" ] ; then
+    export BOOTSTRAP_HASKELL_NONINTERACTIVE=1
+    export BOOTSTRAP_HASKELL_MINIMAL=1
+    curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
+
+    ghcup install ghc "$GHC_VERSION"
+    ghcup set ghc "$GHC_VERSION"
+  else
+    mkdir /tmp/ghc
+    curl "https://downloads.haskell.org/~ghc/$GHC_VERSION/ghc-$GHC_VERSION-aarch64-alpine3_18-linux.tar.xz" | tar --strip-components=1 -xJC /tmp/ghc
+    cd /tmp/ghc
+    ./configure --prefix="$HOME/.ghcup" && make install && rm -rf /tmp/ghc
+  fi
+
+  # Docs take up a lot of space in the image and aren't really necessary.
+  rm -rf "$HOME/.ghcup/share/doc"
+
+EOF
 
-RUN ghcup set ghc 9.8.2
-RUN ghcup install cabal 3.10.3.0
+# Install cabal
+RUN <<EOF
+  if [ $(uname -m) != "aarch64" ] ; then
+    ghcup install cabal 3.10.3.0
+  else
+    curl https://downloads.haskell.org/~ghcup/unofficial-bindists/cabal/3.10.3.0/cabal-install-3.10.3.0-aarch64-alpine3_20.tar.xz | tar -xJC "$HOME/.ghcup/bin/"
+    chmod 755 "$HOME/.ghcup/bin/cabal"
+    rm "$HOME/.ghcup/bin/plan.json"
+  fi
+EOF
 
 # Sets USER environment to overcome issue, as described in:
 # https://github.com/cachix/install-nix-action/issues/122