Run through docker
```
python -m migrate_users_to_keycloak --admin-user admin --admin-pass admin --credentials-path ./staging-users.yaml
INFO:__main__:keycloak server: http://localhost:5080/keycloak/auth/ ; realm: SoftwareHeritage
INFO:__main__:Client: swh-deposit ; client role: swh.deposit.api
INFO:__main__:User 'hal' installed.
INFO:__main__:User 'hal-preprod' installed.
INFO:__main__:User 'hal-test' installed.
INFO:__main__:User 'intel' installed.
INFO:__main__:User 'ipol' installed.
INFO:__main__:User 'swh' installed.
INFO:__main__:User 'swh-worker' installed.
INFO:__main__:User 'swh-olasd' installed.
INFO:__main__:User 'cottagelabs-alexsdutton' installed.
```