updated workflow

.github/workflows/docker-crawlab.yml

@@ -144,13 +144,14 @@ jobs:
 
       - name: Test image
         run: |
-          docker run --rm --name crawlab_master \
+          docker run --rm -d --name crawlab_master \
             -e CRAWLAB_NODE_MASTER=true \
             -e CRAWLAB_DEMO=false \
             -e CRAWLAB_MONGO_HOST=localhost \
             -e CRAWLAB_MONGO_PORT=27017 \
             -p 8080:8080 \
-            image &
+            image
+          docker logs -f crawlab_master &
           docker exec crawlab_master env
           sleep 30
           docker ps