feat: add optimism-contract-deployer image builder

.github/workflows/build-push.yml

@@ -0,0 +1,49 @@
+name: Build docker image
+on:
+  workflow_dispatch:
+
+jobs:
+  build-push:
+    name: build-push
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout this repo
+        uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Context for Buildx
+        shell: bash
+        id: buildx-context
+        run: |
+          docker context create builders
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+        with:
+          endpoint: builders
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ethpandaops/optimism-contract-deployer
+          flavor: latest=true
+          tags: |
+            type=semver,pattern=verkle-gen-{{version}}
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: docker-build-push
+        id: docker_build
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: Dockerfile
+          tags: ${{ steps.meta.outputs.tags }}
+          push: true
+          platforms: linux/amd64,linux/arm64
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}