Tweak Docker workflow

.github/workflows/on-tag.yml

@@ -2,7 +2,7 @@ name: Docker build on tag
 env:
   DOCKER_CLI_EXPERIMENTAL: enabled
   TAG_FMT: "^refs/tags/(((.?[0-9]+){3,4}))$"
-  DOCKER_BUILDKIT: 0
+  DOCKER_BUILDKIT: 1  # Enable BuildKit for better performance
   COMPOSE_DOCKER_CLI_BUILD: 0
 
 on:
@@ -25,13 +25,12 @@ jobs:
     timeout-minutes: 120
     name: Build and push to DockerHub
     steps:
-      # Workaround based on JonasAlfredsson/docker-on-tmpfs@v1.0.1
       - name: Replace the current swap file
         shell: bash
         run: |
-          sudo swapoff /mnt/swapfile
-          sudo rm -v /mnt/swapfile
-          sudo fallocate -l 13G /mnt/swapfile
+          sudo swapoff /mnt/swapfile || true
+          sudo rm -f /mnt/swapfile
+          sudo fallocate -l 16G /mnt/swapfile
           sudo chmod 600 /mnt/swapfile
           sudo mkswap /mnt/swapfile
           sudo swapon /mnt/swapfile
@@ -50,7 +49,7 @@ jobs:
             echo "Directory '/var/lib/docker' not found"
             exit 1
           fi
-          sudo mount -t tmpfs -o size=10G tmpfs /var/lib/docker
+          sudo mount -t tmpfs -o size=12G tmpfs /var/lib/docker
           sudo systemctl restart docker
           sudo df -h | grep docker
 
@@ -75,10 +74,16 @@ jobs:
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
+        with:
+          platforms: linux/amd64,linux/arm64
         id: qemu
 
       - name: Setup Docker buildx action
         uses: docker/setup-buildx-action@v3
+        with:
+          platforms: linux/amd64,linux/arm64
+          driver-opts: |
+            network=host
         id: buildx
 
       - name: Available platforms
@@ -89,19 +94,20 @@ jobs:
         id: cache
         with:
           path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          key: ${{ runner.os }}-buildx-${{ matrix.service }}-${{ github.sha }}
           restore-keys: |
-            ${{ runner.os }}-buildx-
+            ${{ runner.os }}-buildx-${{ matrix.service }}-
 
       - name: Run Docker buildx for ${{ matrix.service }} against tag
         run: |
           docker buildx build \
           --cache-from "type=local,src=/tmp/.buildx-cache" \
-          --cache-to "type=local,dest=/tmp/.buildx-cache" \
+          --cache-to "type=local,dest=/tmp/.buildx-cache,mode=max" \
           --platform linux/amd64,linux/arm64 \
           --tag ${{ secrets.DOCKER_HUB_USER }}/${{ matrix.service }}:$TAG \
           --tag ${{ secrets.DOCKER_HUB_USER }}/${{ matrix.service }}:latest \
           --build-context rustgbt=./rust \
           --build-context backend=./backend \
-          --output "type=registry" ./${{ matrix.service }}/ \
-          --build-arg commitHash=$SHORT_SHA
+          --output "type=registry,push=true" \
+          --build-arg commitHash=$SHORT_SHA \
+          ./${{ matrix.service }}/