Add Gitlab container registry config and docs

server/config/gitlab/README.md

@@ -0,0 +1,10 @@
+# Updating GitLab configuration
+This gitlab instance is using the omnibus package. 
+See [GitLab Omnibus Reconfigure](https://docs.gitlab.com/ee/administration/restart_gitlab.html#omnibus-gitlab-reconfigure) for official docs on reconfiguration. 
+Here are the basic steps:
+1. Update the `GITLAB_OMNIBUS_CONFIG` environment variable in `docker-compose.yml`. Add the desired omnibus configuration lines.
+2. Run `docker exec -it gitlab /bin/bash` to enter the container.
+3. Run `vi /etc/gitlab/gitlab.rb` to begin editing the config file. Make the necessary changes (`i` to enter insert mode), then save (`esc`, then `:wq`, enter).
+4. Run `gitlab-ctl diff-config` to compare the new config file with the *default* config file (not previous).
+5. Run `gitlab-ctl reconfigure` to apply the changes. 
+6. Confirm the value set in step 1 is still correct.

server/config/gitlab/docker-compose.yml

@@ -10,6 +10,7 @@ services:
     environment:
       GITLAB_OMNIBUS_CONFIG: |
         external_url 'https://gitlab.jafner.net'
+        registry_external_url 'https://gitlab.jafner.net:5050'
         gitlab_rails['gitlab_shell_ssh_port'] = 2229
         nginx['listen_https'] = false
         nginx['listen_port'] = 80
@@ -18,6 +19,7 @@ services:
       #- '80:80'
       #- '443:443'
       - '2229:22'
+      - '5050:5050'
     volumes:
       - '${DOCKER_DATA}/config:/etc/gitlab'
       - '${DOCKER_DATA}/logs:/var/log/gitlab'