{"action":"opened","issue":{"url":"https://api.github.com/repos/brian-bason/docker-build-tool/issues/28","repository_url":"https://api.github.com/repos/brian-bason/docker-build-tool","labels_url":"https://api.github.com/repos/brian-bason/docker-build-tool/issues/28/labels{/name}","comments_url":"https://api.github.com/repos/brian-bason/docker-build-tool/issues/28/comments","events_url":"https://api.github.com/repos/brian-bason/docker-build-tool/issues/28/events","html_url":"https://github.com/brian-bason/docker-build-tool/issues/28","id":174501954,"number":28,"title":"Support alternative values for arguments","user":{"login":"brian-bason","id":3508106,"avatar_url":"https://avatars.githubusercontent.com/u/3508106?v=3","gravatar_id":"","url":"https://api.github.com/users/brian-bason","html_url":"https://github.com/brian-bason","followers_url":"https://api.github.com/users/brian-bason/followers","following_url":"https://api.github.com/users/brian-bason/following{/other_user}","gists_url":"https://api.github.com/users/brian-bason/gists{/gist_id}","starred_url":"https://api.github.com/users/brian-bason/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/brian-bason/subscriptions","organizations_url":"https://api.github.com/users/brian-bason/orgs","repos_url":"https://api.github.com/users/brian-bason/repos","events_url":"https://api.github.com/users/brian-bason/events{/privacy}","received_events_url":"https://api.github.com/users/brian-bason/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-09-01T11:39:49Z","updated_at":"2016-09-01T11:39:49Z","closed_at":null,"body":"Some times an argument value needs to be mapped to a different value. As an example an architecture value of either **amd64** or **arm** should be mapped to <blank> and pi respectively. This will give the user the ability to accept certain values for an argument but be converted to another value for the build.\r\n\r\n```\r\nARGS:\r\n    ARCHITECTURE:\r\n        CHOICE:\r\n            - \"amd64\"\r\n            - \"arm\"\r\n        MAPPINGS:\r\n\r\n```"}}
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