{"action":"opened","issue":{"url":"https://api.github.com/repos/everett-toews/jupyterhub-on-docker-swarm/issues/22","repository_url":"https://api.github.com/repos/everett-toews/jupyterhub-on-docker-swarm","labels_url":"https://api.github.com/repos/everett-toews/jupyterhub-on-docker-swarm/issues/22/labels{/name}","comments_url":"https://api.github.com/repos/everett-toews/jupyterhub-on-docker-swarm/issues/22/comments","events_url":"https://api.github.com/repos/everett-toews/jupyterhub-on-docker-swarm/issues/22/events","html_url":"https://github.com/everett-toews/jupyterhub-on-docker-swarm/issues/22","id":135506715,"number":22,"title":"launch.py: add node constraint to jupyterhub-carina container build","user":{"login":"smashwilson","id":17565,"avatar_url":"https://avatars.githubusercontent.com/u/17565?v=3","gravatar_id":"","url":"https://api.github.com/users/smashwilson","html_url":"https://github.com/smashwilson","followers_url":"https://api.github.com/users/smashwilson/followers","following_url":"https://api.github.com/users/smashwilson/following{/other_user}","gists_url":"https://api.github.com/users/smashwilson/gists{/gist_id}","starred_url":"https://api.github.com/users/smashwilson/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/smashwilson/subscriptions","organizations_url":"https://api.github.com/users/smashwilson/orgs","repos_url":"https://api.github.com/users/smashwilson/repos","events_url":"https://api.github.com/users/smashwilson/events{/privacy}","received_events_url":"https://api.github.com/users/smashwilson/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-02-22T18:51:57Z","updated_at":"2016-02-22T18:51:57Z","closed_at":null,"body":"In `launch.py`, the `docker build` command needs to have a segment constraint to build in the right place:\r\n\r\n```bash\r\ndocker build --build-arg constraint:node==*n1 ...\r\n```"}}