chore: add a dedicated GitHub action job to test armhf build, hoping for some upstream fix

.github/workflows/continuous_integration.yml

@@ -68,4 +68,28 @@ jobs:
       - name: Build and push Docker image for main branch
         run: |
           make release GOTENBERG_VERSION=edge
-          make release GOTENBERG_VERSION=edge DOCKER_REPOSITORY=thecodingmachine
+          make release GOTENBERG_VERSION=edge DOCKER_REPOSITORY=thecodingmachine
+
+  # FIXME: temporary job for checking if armhf build is working thanks to an upstream fix.
+  armhf_build:
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    continue-on-error: true
+    needs:
+      - Tests
+    name: armhf build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Checkout source code
+        uses: actions/checkout@v4
+      - name: Log in to Docker Hub Container Registry
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Build try of armhf Docker image variant
+        run: |
+          make release GOTENBERG_VERSION=armmhf

scripts/release.sh

@@ -10,6 +10,25 @@ NOTO_COLOR_EMOJI_VERSION="$5"
 PDFTK_VERSION="$6"
 DOCKER_REPOSITORY="$7"
 
+# FIXME: for whatever reasons, platform linux/arm/v7 (armhf) is not working
+#  anymore. See https://github.com/gotenberg/gotenberg/issues/709 for more
+#  details.
+
+if [ "$GOTENBERG_VERSION" == "armhf" ]; then
+  docker buildx build \
+      --build-arg GOLANG_VERSION="$GOLANG_VERSION" \
+      --build-arg GOTENBERG_VERSION="$GOTENBERG_VERSION" \
+      --build-arg GOTENBERG_USER_GID="$GOTENBERG_USER_GID" \
+      --build-arg GOTENBERG_USER_UID="$GOTENBERG_USER_UID" \
+      --build-arg NOTO_COLOR_EMOJI_VERSION="$NOTO_COLOR_EMOJI_VERSION" \
+      --build-arg PDFTK_VERSION="$PDFTK_VERSION" \
+      --platform linux/arm/v7 \
+      -t "$DOCKER_REPOSITORY/gotenberg:armhf" \
+      -f build/Dockerfile .
+
+  exit 0
+fi
+
 if [ "$GOTENBERG_VERSION" == "edge" ]; then
   docker buildx build \
     --build-arg GOLANG_VERSION="$GOLANG_VERSION" \
@@ -20,7 +39,6 @@ if [ "$GOTENBERG_VERSION" == "edge" ]; then
     --build-arg PDFTK_VERSION="$PDFTK_VERSION" \
     --platform linux/amd64 \
     --platform linux/arm64 \
-    --platform linux/arm/v7 \
     --platform linux/386 \
     -t "$DOCKER_REPOSITORY/gotenberg:edge" \
     --push \
@@ -57,7 +75,6 @@ docker buildx build \
   --build-arg PDFTK_VERSION="$PDFTK_VERSION" \
   --platform linux/amd64 \
   --platform linux/arm64 \
-  --platform linux/arm/v7 \
   --platform linux/386 \
   -t "$DOCKER_REPOSITORY/gotenberg:latest" \
   -t "$DOCKER_REPOSITORY/gotenberg:${SEMVER[0]}" \