ci: build Docker image for arm64 too

Signed-off-by: Miroslav Bajtoš <[email protected]>

.github/workflows/ci.yml

@@ -36,6 +36,11 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: "arm64"
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
 
@@ -49,6 +54,14 @@ jobs:
           cache-from: type=registry,ref=ghcr.io/filecoin-station/core
           cache-to: type=inline
 
+      - name: Build Docker image for other platforms
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          platforms: linux/arm64
+          cache-from: type=registry,ref=ghcr.io/filecoin-station/core
+          cache-to: type=inline
+
       - name: Start Station Core container
         run: |
          docker run \