gha integration tests

Author: Lusitaniae

.github/workflows/tests-grpc.yml

@@ -108,7 +108,7 @@ jobs:
     - name: Start faithful-cli server
       uses: JarvusInnovations/background-action@v1
       with:
-        run: ./bin/faithful-cli rpc --listen ":7999" --grpc-listen ":8999" --watch /tmp/$EPOCH.yml
+        run: ./bin/faithful-cli rpc --listen ":7999" --grpc-listen ":8999" --watch /tmp/$EPOCH.yml &
         wait-on: http://localhost:7999/health
         wait-for: 5s