Add Dockerfile and automation to build and publish a docker image

.github/workflows/deploy-docker.yml

@@ -0,0 +1,51 @@
+name: Build and Publish Docker Image
+
+on:
+  workflow_dispatch:
+  workflow_call:
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Convert Repository Name to Lowercase
+      run: |
+        echo "GHCR_IMAGE_NAME=$(echo "ghcr.io/${{ github.repository }}" | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Log in to GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Extract metadata
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        images: ${{ env.GHCR_IMAGE_NAME }}
+        tags: |
+          type=sha
+          type=raw,value=latest,enable=${{ github.ref == 'refs/heads/master' }}
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v6
+      with:
+        context: .
+        file: docker/Dockerfile
+        platforms: linux/amd64
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
+        cache-from: type=gha
+        cache-to: type=gha,mode=max

.github/workflows/deploy-everywhere.yml

@@ -9,3 +9,7 @@ jobs:
   deploy-wikitree-apps:
     uses: ./.github/workflows/deploy-wikitree-apps.yml
     secrets: inherit
+
+  deploy-docker:
+    uses: ./.github/workflows/deploy-docker.yml
+    secrets: inherit