gitlab docker ssh issue - nginx

Question

I looked the different posts concerning gitlab, docker, and ssh issues without any help. So, I ask my question here.
I have the following setting:
linux box with ubuntu server 14.04 and IP 192.168.1.104
DNS: git.mydomain.com = 192.168.1.104
A gitlab docker that I start, according to the official doc, this way:
sudo docker run --detach --name gitlab_app --publish 8080:80 --publish 2222:22 --volumes-from gitlab_data gitlab_image
or
sudo docker run --detach --name gitlab_app --publish 8080:80 --publish 2222:22 -e "GITLAB_SHELL_SSH_PORT=2222" --volumes-from gitlab_data gitlab_image
the linux box runs an nginx which redirects (proxy_pass) git.mydomain.com to 192.168.1.104:8080
I access git.mydomain.com without any issue, everything works.
I generated an ssh key that I have added to my profile on gitlab and added the following lines to my ~/.ssh/config
Host git.mydomain.com
User git
Port 2222
IdentityFile /home/user/.ssh/id_rsa
If I try
ssh -p 2222 git#git.mydomain.com
the connection is closed. I assume it is because only a git-shell is permitted.
But, if I try
mkdir test
cd test
git init
touch README.md
git add README.md
git commit -m "first commit"
git remote add origin git#git.domain.com:user/test.git
git push -u origin master
it stucks with
Connection closed by 192.168.1.104
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
I also tried with
git remote add origin git#git.domain.com:2222/user/
and the result was the same.
Note that the logs of gitlab docker include
[2015-03-06T11:04:43+00:00] INFO: group[git] created
[2015-03-06T11:04:43+00:00] INFO: user[git] created
[2015-03-06T11:04:44+00:00] INFO: group[gitlab-www] created
[2015-03-06T11:04:44+00:00] INFO: user[gitlab-www] created
Any idea how I can fix this issue?
Thanks in advance for your help.

Answer 1

I would guess that you have authentication problem.
Here are few things you can try:
Make sure you added you public key in gitlab.
Check permissions of you id_rsa file.
Try temporarily disabling hosts verification with
StrictHostKeyChecking no
UserKnownHostsFile /dev/null
I have the same setup as you (docker container in VM, DNS points to VM). I also configured .ssh/config like you.
But when I log-in with ssh I get:
ssh -p 2222 git#gitlab
PTY allocation request failed on channel 0
Welcome to GitLab, tomzo!
Connection to gitlab closed.
Git remotes do not need port 2222 configured. This is OK (works for me):
$ git remote -v
origin git#gitlab:lab/workflow.git (fetch)
origin git#gitlab:lab/workflow.git (push)
And I can push and pull with git.
$ git push
Everything up-to-date