No admin user is created when installing in dev mode through Docker

[masavini]

Describe the issue No admin user is created when installing in dev mode through Docker.

To Reproduce Steps to reproduce the issue:

1. git clone https://github.com/mediacms-io/mediacms
2. cd mediacms
3. docker-compose -f docker-compose-dev.yaml build
4. docker-compose -f docker-compose-dev.yaml up

Docker relevant log part

[...]
mediacms-web-1       |   Applying socialaccount.0003_extra_data_default_dict... OK
mediacms-web-1       | Running loaddata and creating admin user
mediacms-web-1       | Installed 22 object(s) from 1 fixture(s)
mediacms-web-1       | Installed 6 object(s) from 1 fixture(s)
mediacms-web-1       | CommandError: Username cannot be blank.       <<<<<<<<<<<<
mediacms-web-1       | Created admin user with password: vk589fprxd
mediacms-web-1       | RUNNING COLLECTSTATIC
[...]

Environment (please complete the following information):

• OS: Ubuntu Linux

• Installation method: Docker install

  A simple workaround is running python manage.py createsuperuser, but I guess something should be fixed in deploy/docker/prestart.sh: it looks like $ADMIN_USER variable is unset...

[Mozitux]

Hi, in which Ubuntu version are you trying to install MediaCMS? Did you get you the same issue when you try in Single Server?

[masavini]

ubuntu 16.04 with docker engine 20.10.9. i didn't try single server installation.

the issue, however, was solved adding admin usr and pwd to the environment section of the docker-compose file (see pull request for details).