feat: action to build docker images on push to develop branch

.github/workflows/build-and-push-images.yml

@@ -0,0 +1,59 @@
+name: Build and Push Docker Images
+
+on:
+  push:
+    branches: [ "develop" ]
+  workflow_dispatch:  # Allows manual triggering
+
+env:
+  REGISTRY: registry.digitalocean.com
+  REPOSITORY: sigil
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      # Authenticate with Digital Ocean registry
+      - name: Log in to DO Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.DIGITALOCEAN_ACCESS_TOKEN }}
+          password: ${{ secrets.DIGITALOCEAN_ACCESS_TOKEN }}
+
+      # Build and push each image
+      - name: Build and push images
+        uses: docker/bake-action@v4
+        with:
+          files: ./docker-bake.hcl
+          targets: |
+            op-node
+            op-batcher
+            op-proposer
+          push: true
+          set: |
+            *.REGISTRY=${{ env.REGISTRY }}
+            *.REPOSITORY=${{ env.REPOSITORY }}
+            *.IMAGE_TAGS=${{ github.sha }},latest
+            *.PLATFORMS=linux/amd64
+
+      - name: Save DigitalOcean kubeconfig
+        run: doctl kubernetes cluster kubeconfig save ${{ secrets.CLUSTER_NAME }}
+
+      - name: Update deployment image
+        run: |
+          kubectl set image statefulset/${{ matrix.deployment }} ${{ matrix.component }}=${REGISTRY}/${{ matrix.component }}:${GITHUB_SHA}
+
+      - name: Verify deployment
+        run: |
+          kubectl rollout status statefulset/${{ matrix.deployment }}

ops/README.md

@@ -1,3 +1,9 @@
 # ops
 
 Various operational packages
+
+## Building op-node
+
+Building the image for `op-node` requires `rollup.json` to be in the project
+root.  You can read more about how to generate `rollup.json` in the [op-stack
+tutorial](https://docs.optimism.io/builders/chain-operators/tutorials/create-l2-rollup#generate-the-l2-config-files).

ops/docker/op-stack-go/Dockerfile

@@ -125,6 +125,8 @@ CMD ["op-wheel"]
 
 FROM --platform=$TARGETPLATFORM $TARGET_BASE_IMAGE AS op-node-target
 COPY --from=op-node-builder /app/op-node/bin/op-node /usr/local/bin/
+# also copy rollup.json into the image
+COPY ./rollup.json /rollup.json
 CMD ["op-node"]
 
 FROM --platform=$TARGETPLATFORM $TARGET_BASE_IMAGE AS op-challenger-target