Add both

.github/workflows/release-test.yml

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+name: Release MLS Validation Service
+
+on:
+  push:
+    tags:
+      - 'mls-validation-service-v*'
+
+  workflow_dispatch:
+
+jobs:
+  push_to_registry:
+    name: Push Docker Image to GitHub Packages
+    runs-on: warp-ubuntu-latest-x64-16x
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Log in to the container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/xmtp/mls-validation-service
+          tags: |
+            type=ref,event=tag
+            type=match,pattern=mls-validation-service-(.*),group=1
+            type=match,pattern=mls-validation-service-v(.*),group=1
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        id: push
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

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+# website::tag::1:: Build a simple Docker image that contains a text file with the contents "Hello, World!"
+FROM ubuntu:18.04
+RUN echo 'Hello, World!' > /test.txt