about/docs/handbook/infrastructure/file_locations.md

File Locations

To try and standardize things, aim to store specific files in an appropriate location, so that they can easily be located in the future.

docker-compose.yml

When using a Docker Compose file on Debian/Ubuntu, make the specific service its own directory in /srv/, and put the docker-compose.yml file inside that directory.

For example: /srv/authentik/docker-compose.yml

Caddyfile

When using the Caddy web server on Debian/Ubuntu, and when configuring the server using the Caddyfile, store the file in /etc/caddy/Caddyfile