nixos/tests/docker-tools: Use curl --fail

Changed files
+1 -1
nixos
+1 -1
nixos/tests/docker-tools.nix
···
"docker load --input='${examples.nginx}'",
"docker run --name nginx -d -p 8000:80 ${examples.nginx.imageName}",
)
-
docker.wait_until_succeeds("curl http://localhost:8000/")
+
docker.wait_until_succeeds("curl -f http://localhost:8000/")
docker.succeed(
"docker rm --force nginx", "docker rmi '${examples.nginx.imageName}'",
)