CI: fix multi-arch push to Dockerhub

Author: dannywillems

.github/workflows/docker.yaml

@@ -9,7 +9,6 @@ env:
 
 jobs:
   build-mina-node-image:
-    if: github.ref != 'refs/heads/develop' && !startsWith(github.ref, 'refs/tags/')
     timeout-minutes: 40
     strategy:
       matrix:
@@ -62,7 +61,6 @@ jobs:
 
   # Frontend
   build-mina-frontend-image:
-    if: github.ref != 'refs/heads/develop' && !startsWith(github.ref, 'refs/tags/')
     timeout-minutes: 5
     strategy:
       matrix:
@@ -112,26 +110,14 @@ jobs:
           if-no-files-found: error
           retention-days: 1
 
-  # Push images to registry
-  push-images:
-    strategy:
-      matrix:
-        arch:
-          - platform: linux/amd64
-            runs-on: ubuntu-latest
-          - platform: linux/arm64
-            runs-on: ubuntu-24.04-arm
-    runs-on: ${{ matrix.arch.runs-on }}
+  # Create and push multi-arch manifests for production releases
+  push-multi-arch-images:
+    runs-on: ubuntu-latest
     if: github.ref == 'refs/heads/develop' || startsWith(github.ref, 'refs/tags/') || startsWith(github.ref, 'refs/heads/release')
+    needs:
+      - build-mina-node-image
+      - build-mina-frontend-image
     steps:
-      - name: Git checkout
-        uses: actions/checkout@v5
-
-      # This is needed so that we can get the current version with vergen
-      - name: Fetch tag for current commit
-        run: |
-          git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
@@ -149,12 +135,35 @@ jobs:
             echo "GIT_COMMIT=${BRANCH_NAME}" >> $GITHUB_ENV
           fi
 
-      - name: Build and push mina-rust image
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      # Create mina-rust multi-arch manifest
+      - name: Download mina-rust digests
+        uses: actions/download-artifact@v4
+        with:
+          path: /tmp/mina-digests
+          pattern: node-digests-*
+          merge-multiple: true
+
+      - name: Create mina-rust manifest list and push
+        working-directory: /tmp/mina-digests
         run: |
-          make docker-build-mina
-          make docker-push-mina
+          docker buildx imagetools create \
+            --tag ${{ env.REGISTRY_NODE_IMAGE }}:${{ env.GIT_COMMIT }} \
+            $(printf '${{ env.REGISTRY_NODE_IMAGE }}@sha256:%s ' *)
+
+      # Create mina-rust-frontend multi-arch manifest
+      - name: Download mina-rust-frontend digests
+        uses: actions/download-artifact@v4
+        with:
+          path: /tmp/frontend-digests
+          pattern: frontend-*-digests-*
+          merge-multiple: true
 
-      - name: Build and push mina-rust-frontend image
+      - name: Create mina-rust-frontend manifest list and push
+        working-directory: /tmp/frontend-digests
         run: |
-          make docker-build-frontend
-          make docker-push-frontend
+          docker buildx imagetools create \
+            --tag ${{ env.REGISTRY_FRONTEND_IMAGE }}:${{ env.GIT_COMMIT }} \
+            $(printf '${{ env.REGISTRY_FRONTEND_IMAGE }}@sha256:%s ' *)