Add GitHub workflow for building and publishing Docker image

.github/workflows/docker.yml

@@ -0,0 +1,52 @@
+name: Publish Docker
+on:
+  push:
+    branches:
+      - main
+      - dev
+    tags:
+      - v*
+
+# Adapted from:
+# - https://github.com/docker/metadata-action#semver
+# - https://docs.github.com/en/actions/publishing-packages/publishing-docker-images#publishing-images-to-github-packages
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Docker Meta
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+      -
+        name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      -
+        name: Build and Push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: .docker/Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}