Docker Hub's Github integration requires both read and write access for private repositories. In fact, if you want it to set up deploy keys I think it requires

Docker Hub's Github integration requires both read and write access for private repositories. In fact, if you want it to set up deploy keys I think it requires Admin access. See this issue: https://github.com/docker/hub-feedback/issues/873 https://github.com/docker/hub-feedback/issues/873