One of the login options for dex uses the Bitbucket OAuth2 flow to identify the end user through their Bitbucket account.
When a client redeems a refresh token through dex, dex will re-query Bitbucket to update user information in the ID Token. To do this, __dex stores a readonly Bitbucket access token in its backing datastore.__ Users that reject dex's access through Bitbucket will also revoke all dex clients which authenticated them through Bitbucket.
## Configuration
Register a new OAuth consumer with [Bitbucket](https://confluence.atlassian.com/bitbucket/oauth-on-bitbucket-cloud-238027431.html) ensuring the callback URL is `(dex issuer)/callback`. For example if dex is listening at the non-root path `https://auth.example.com/dex` the callback would be `https://auth.example.com/dex/callback`.
The application requires the user to grant the `Read Account` and `Read Team membership` permissions. The latter is required only if group membership is a desired claim.
# Optional teams whitelist, communicated through the "groups" scope.
# If `teams` is omitted, all of the user's Bitbucket teams are returned when the groups scope is present.
# If `teams` is provided, this acts as a whitelist - only the user's Bitbucket teams that are in the configured `teams` below will go into the groups claim. Conversely, if the user is not in any of the configured `teams`, the user will not be authenticated.
