try actions

.github/workflows/main.yml

@@ -26,7 +26,7 @@ jobs:
       run: docker run -d --name ${{ github.sha }} ${{ github.sha }}
 
     - name: Wait for Rails to start
-      run: sh -c 'until nc -z localhost 3000; do sleep 1; done'
+      run: apt-get install --no-install-recommends -y netcat && sh -c 'until nc -z localhost 3000; do sleep 1; done'
 
     #- name: Run Rails tests
     #  run: docker exec -t ${{ github.sha }} bin/rails test