Fix master workflow triggers and publish build

Author: aerabi

.github/workflows/publish-labspace.yml

@@ -16,12 +16,23 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Log in to DockerHub
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
+      - name: Build Workspace Image Locally
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: labspace/Dockerfile.workspace
+          load: true
+          tags: aerabi/docker-commandos-workspace:latest
+
       - name: Publish Labspace
         uses: dockersamples/publish-labspace-action@v2
         with: