Remove the execution of github actions on forks

Reference: https://docs.github.com/en/actions/using-jobs/using-conditions-to-control-job-execution

Co-authored-by: assume <[email protected]>

.github/workflows/build-template-ws.yaml

@@ -10,6 +10,7 @@ on:
 
 jobs:
   docker:
+    if: github.repository == 'j3soon/ros2-agv-essentials'
     runs-on: ubuntu-latest
     steps:
       -