Add Docker publishing workflow

Author: Labby AI

.github/workflows/docker-publish.yml

@@ -0,0 +1,29 @@
+name: Docker Publish
+
+on:
+  push:
+    branches: ["master", "main"]
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Log in to the Container registry
+        uses: docker/login-action@v2
+        with:
+         registry: ghcr.io
+         username: ${{ github.actor }}
+         password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          push: true
+          tags: ghcr.io/${{ github.repository }}/app:latest