How to use Lets Encrypt with the Docker Image of Mattermost

Ok, I tried adding these symlinks but I got an error in my browser after I edited MATTERMOST_ENABLE_SSL=true

sudo ln -s /etc/letsencrypt/live/mydomain.com/fullchain.pem /home/myuser/mattermost-docker/volumes/web/cert/fullchain.pem
sudo ln -s /etc/letsencrypt/live/mydomain.com/cert.pem /home/myuser/mattermost-docker/volumes/web/cert/cert.pem
sudo ln -s /etc/letsencrypt/live/mydomain.com/privkey.pem /home/myuser/mattermost-docker/volumes/cert/key-no-password.pem

Do you know what I'm doing wrong?