try actions

.github/workflows/main.yml

@@ -26,7 +26,7 @@ jobs:
       run: docker run -d -p 3000:3000 local
 
     - name: Wait for Rails to start
-      run: docker exec $(docker ps -q) sh -c 'until nc -z localhost 3000; do sleep 1; done'
+      run: docker exec $(docker ps -q) /bin/sh -c 'until nc -z localhost 3000; do sleep 1; done'
 
     - name: Run Rails tests
       run: docker exec $(docker ps -q) bundle exec rails test