root: add geoip config to docker-compose

website/docs/installation/docker-compose.md

@@ -20,7 +20,7 @@ To optionally deploy a different version run `echo AUTHENTIK_TAG=2021.3.3 >> .en
 
 If this is a fresh authentik install run the following commands to generate a password:
 
-```
+```shell
 sudo apt-get install -y pwgen
 echo "PG_PASS=$(pwgen 40 1)" >> .env
 echo "AUTHENTIK_SECRET_KEY=$(pwgen 50 1)" >> .env
@@ -32,7 +32,7 @@ It is also recommended to configure global email credentials. These are used by
 
 Append this block to your `.env` file
 
-```
+```shell
 # SMTP Host Emails are sent to
 AUTHENTIK_EMAIL__HOST=localhost
 AUTHENTIK_EMAIL__PORT=25
@@ -48,11 +48,27 @@ AUTHENTIK_EMAIL__TIMEOUT=10
 AUTHENTIK_EMAIL__FROM=authentik@localhost
 ```
 
+## GeoIP configuration (optional)
+
+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:
+
+```shell
+GEOIPUPDATE_ACCOUNT_ID=*your account ID*
+GEOIPUPDATE_LICENSE_KEY=* your license key*
+AUTHENTIK_AUTHENTIK__GEOIP=/geoip/GeoLite2-City.mmdb
+```
+
+The GeoIP database will automatically be updated every 8 hours.
+
 ## Startup
 
 Afterwards, run these commands to finish
 
-```
+```shell
 docker-compose pull
 docker-compose up -d
 docker-compose run --rm server migrate