{"action":"opened","issue":{"url":"https://api.github.com/repos/jpetazzo/dind/issues/65","labels_url":"https://api.github.com/repos/jpetazzo/dind/issues/65/labels{/name}","comments_url":"https://api.github.com/repos/jpetazzo/dind/issues/65/comments","events_url":"https://api.github.com/repos/jpetazzo/dind/issues/65/events","html_url":"https://github.com/jpetazzo/dind/issues/65","id":67582710,"number":65,"title":"Caching repository","user":{"login":"kojiromike","id":1566303,"avatar_url":"https://avatars.githubusercontent.com/u/1566303?v=3","gravatar_id":"","url":"https://api.github.com/users/kojiromike","html_url":"https://github.com/kojiromike","followers_url":"https://api.github.com/users/kojiromike/followers","following_url":"https://api.github.com/users/kojiromike/following{/other_user}","gists_url":"https://api.github.com/users/kojiromike/gists{/gist_id}","starred_url":"https://api.github.com/users/kojiromike/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kojiromike/subscriptions","organizations_url":"https://api.github.com/users/kojiromike/orgs","repos_url":"https://api.github.com/users/kojiromike/repos","events_url":"https://api.github.com/users/kojiromike/events{/privacy}","received_events_url":"https://api.github.com/users/kojiromike/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-04-10T12:23:22Z","updated_at":"2015-04-10T12:23:22Z","closed_at":null,"body":"One of the downsides of dind is that the inner host pulls images even if the outer host already has those images. I'm totally softballing this question, but to get the conversation started, have you considered ways to cache the images fetched by one inner docker host so that they can be used without real bandwidth pulls by another inner host?"}}