Also build arm64 base image

.github/workflows/build.yml

@@ -48,6 +48,10 @@ jobs:
         run: df -h && sudo apt-get clean && docker system prune -a -f && sudo rm -rf /usr/local/lib/android /usr/share/dotnet /opt/ghc && df -h
       - name: Checkout
         uses: actions/checkout@v4
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+        with:
+          platforms: arm64
       - name: Install buildx
         uses: docker/setup-buildx-action@v3
         with:
@@ -69,6 +73,7 @@ jobs:
       - name: Build target base image
         uses: docker/build-push-action@v6
         with:
+          platforms: linux/amd64,linux/arm64
           context: images/base
           pull: true
           push: true

images/base/Dockerfile

@@ -12,7 +12,7 @@ RUN \
         gtk-doc-tools gobject-introspection gawk \
         ocaml ocamlbuild libnum-ocaml-dev indent p7zip-full \
         python3-setuptools python3-jinja2 python3-jsonschema python3-apt python-is-python3 && \
-    curl -fsSL https://deb.nodesource.com/setup_lts.x | bash - && \
+    curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
     apt-get -y install nodejs && \
     apt-get -y clean && \
     git config --global user.email "builder@localhost" && \