Thank you @askz.

There is still errors at the creation of the container, I'm working on it.

For instance, I have this :
mail_1 | Regenerating 'vmailbox' for given users mail_1 | docker_mail_users => ['[email protected]|xxxxxx'] mail_1 | user 'max' for domain 'zkp.fr' with password 'xxxxxxx' mail_1 | maildirmake: /var/mail/zkp.fr/max: No such file or directory mail_1 | Postmap configurations

I know why. At this time, we try to postmap a file that doesn't exists in the container.
It's provided by a volume containing the full /etc/postfix directory.
I'm fixing it right now.

@askz I just updated the repository. Please have a look to the changes.

Thanks, the vmail error is fixed.
but now :

mail_1 | Postfix configurations
mail_1 | sed: can't read /etc/postfix/main.cf: No such file or directory
mail_1 | postmap: fatal: open /etc/postfix/main.cf: No such file or directory

Hmm have you updated your local git repository? I tried locally and it works.
Or are you using the docker pre-built images tvial/docker-mailserver? (I just had a look and build has failed but it doesn't semmed to be related to the changes but a Docker infrastructure issue.)

The image on the registry is up to date. You can docker pull tvial/docker-mailserver.
Don't forget to remove existing container before you run the new one.

Okay, thank you for this, the docker-compose is now building, I can log into imap server, but smtp's refusing login.
I'm very interested in this kind of container, I'll give it a shoot when I'll have some time !