Docker GitLab-ce Setting ssh port

Hello,

I open this issue because I have a question about the configuration of setting ssh port between Docker (docker-compose config file) and GitLab-ce container.

My docker host server is running ssh over port 22 so I can't start my GitLab-ce container with this configuration in my docker-compose.yml config file : ports: - '22:22'

I got this error message :

Creating gitlabce_web_1 ... error

ERROR: for gitlabce_web_1 Cannot start service web: b'driver failed programming external connectivity on endpoint gitlabce_web_1 (d7fa55c38fa16d7bd5e6a9e028ba57a30e3713320f04b6cc70b643d0891cf926): Error starting userland proxy: listen tcp 0.0.0.0:22: bind: address already in use'

ERROR: for web Cannot start service web: b'driver failed programming external connectivity on endpoint gitlabce_web_1 (d7fa55c38fa16d7bd5e6a9e028ba57a30e3713320f04b6cc70b643d0891cf926): Error starting userland proxy: listen tcp 0.0.0.0:22: bind: address already in use' ERROR: Encountered errors while bringing up the project.

So my requierments are that I would not want my GitLab users to change any config to push/pull/commit their code in their repositories and have an url with a custom port in it. And I can't change the listening ssh port on the docker host because of patching security process already in place.

What is the best way to deal with the ssh port forwarding configuration ?

Is it possible to have docker host and container using the same ssh port ?

Thank you very much for your help

Best regards,