Official documentation here
!!! warning This installation is suitable only for developpement, not for production. See here
wget https://raw.githubusercontent.com/wekan/wekan/devel/docker-compose.yml
For a quick start, comment or modify these lines in docker-compose.yml:
- MAIL_URL=smtp://user:pass@mailserver.example.com:25/
- MAIL_FROM='Example Wekan Support <support@example.com>'
docker-compose up
So now, you can access to wekan at http://localhost/