Create container.yml: build and push docker image upon tagging (#536)

.github/workflows/container.yml

@@ -0,0 +1,47 @@
+name: Docker Compose Build on Tag
+
+# The workflow is triggered when a tag is pushed
+on:
+  push:
+    tags:
+      - "*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      # Check out the repository
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      # Set up Docker
+      - name: Set up Docker
+        uses: docker/setup-buildx-action@v1
+
+      # Log in to GitHub Container Registry
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Run docker-compose build
+      - name: Build Docker images
+        run: |
+          cp .env.example .env
+          docker-compose build
+
+      # Get Tag Name
+      - name: Get Tag Name
+        id: tag_name
+        run: echo "TAG_NAME=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_ENV
+
+      # Tag it properly before push to github
+      - name: tag image and push
+        run: |
+          docker tag librechat:latest ghcr.io/${{ github.repository_owner }}/librechat:${{ env.TAG_NAME }}
+          docker push ghcr.io/${{ github.repository_owner }}/librechat:${{ env.TAG_NAME }}
+          docker tag librechat:latest ghcr.io/${{ github.repository_owner }}/librechat:latest
+          docker push ghcr.io/${{ github.repository_owner }}/librechat:latest