add ghcr action

.github/workflows/build-and-publish.yml

@@ -0,0 +1,31 @@
+name: Build and Publish
+
+on:
+  push:
+    branches:
+      - 'main'
+  pull_request:
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to Github Packages
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: ${{ github.ref == 'refs/heads/main' }}
+          tags: ghcr.io/chaoswest-tv/concierge:latest