GitLabにバンドルされているMattermostを使用するmattermost_external_url 'http://192.168.10.20:8001' mattermost['gitlab_enable'] = true mattermost['gitlab_id'] = "4cbe8bd636cacd2fda600c6d990fa90f3b29c6d5ce42934fbbd3998c5f169c09" mattermost['gitlab_secret'] = "bc5a7381cce9c4b0d0ec2e4a4939305ab486f81928607bd253b8f28ce7a1440b" mattermost['gitlab_scope'] = "" mattermost['gitlab_auth_endpoint'] = "http://external_urlの値/oauth/authorize" mattermost['gi
