Update docker-image.yml

.github/workflows/docker-image.yml

@@ -13,9 +13,7 @@ on:
 jobs:
   push_to_Docker_Hub:
     # The type of runner that the job will run on
-    runs-on: self-hosted
-    # build docker image and push to docker hub
-    #needs: [build_test]
+    runs-on: ubuntu-latest
 
     steps:
       - name: checkout repo