Add GHA workflow to publish the Compose file

Author: mikesir87

.github/workflows/deploy-labspace-compose.yaml

@@ -0,0 +1,30 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      # Ensure Compose v2.39.3+ is available (includes bug fixes for publishing)
+      # Can remove this action once default runners include it
+      - name: Set up Docker Compose
+        uses: docker/setup-compose-action@v1
+        with:
+          version: v2.39.3
+
+      - name: Log in to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Publish Compose file
+        run: |
+          docker compose -f oci://dockersamples/labspace -f .labspace/compose.override.yaml publish $DOCKERHUB_USERNAME/labspace-container-supported-development --with-env -y