Download the latest `docker-compose.yml` from [here](https://raw.githubusercontent.com/goauthentik/authentik/version/2021.8.1-rc1/docker-compose.yml). Place it in a directory of your choice.
## Email configuration (optional, but recommended)
It is also recommended to configure global email credentials. These are used by authentik to notify you about alerts, configuration issues. They can also be used by [Email stages](flow/stages/email/index.md) to send verification/recovery emails.
authentik can use a MaxMind-formatted GeoIP Database to extract location data from IPs. You can then use this location data in policies, and location data is saved in events.
To configure GeoIP, sign up for a free MaxMind account [here](https://www.maxmind.com/en/geolite2/signup).
After you have your account ID and license key, add the following block to your `.env` file:
The compose file statically references the latest version available at the time of downloading the compose file, which can be overridden with the `AUTHENTIK_TAG` environment variable.
To start the initial setup, navigate to `https://<your server>/if/flow/initial-setup/`. There you will be prompted to set a password for the akadmin user.
This is the backend service, which does all the logic, runs the API and the actual SSO part. It also runs the frontend, hosts the JS/CSS files, and also servers the files you've uploaded for icons/etc.