Add docker publish workflow

.github/workflows/docker-publish.yml

@@ -0,0 +1,24 @@
+name: Docker Publish
+
+on:
+  push:
+    branches: ["main"]
+
+jobs:
+  docker-build:
+    runs-on: ubuntu-24.04
+    env:
+      REGISTRY: ghcr.io
+      IMAGE_NAME: ${{ github.repository }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build Docker image
+        run: docker build -t "${REGISTRY}/${IMAGE_NAME}:main" .
+      - name: Push Docker image
+        run: docker push "${REGISTRY}/${IMAGE_NAME}:main"