Minimum File Structure

/home/
└── ~/
    └── docker/
        └── seafile/
            ├── .env
            ├── docker-compose.yml

Caddyfile

subdomain.example.com {
	reverse_proxy seafile:80
}

set your environment variables

nano /home/~/docker/seafile/seafile-data/seafile/conf/seahub_settings.py

Change FILE_SERVER_ROOT to be https instead of http. Example Below:

FILE_SERVER_ROOT = "https://subdomain.example.com/seafhttp"

nano /home/~/docker/seafile/seafile-data/seafile/conf/ccnet.conf

Change SERVICE_URL from http to https and remove the :8000 at the end. Example Below:

SERVICE_URL https://subdomain.example.com

webdav.example.com {
	reverse_proxy seafile:8080
}

Here I assigned a new subdomain webdav and point it to port 8080 which is the defualt on seafdav.conf

nano /home/~/docker/seafile/seafile-data/seafile/conf/seafdav.conf

Set enabled=true Set share_name = /

Remember to do a docker-compose restart and a caddy exec restart after modifying seafile conf files!