Добавить GitLab-Server-Setup.md

GitLab-Server-Setup.md

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+# Foreword
+Since we using local instance on virtual machine first of all we need to set all urls to localhost/ip of virtual machine
+It's important because gitlab behind the hood will use `gitlab.local` url, and this address will be unreachable in case we use
+port forwarding from virtual machine.
+
+# Setup local server
+After gitlab instance installed let's get in docker container and change `external_url` setting:
+
+```bash
+# enter container
+docker exec -it gitlab bash
+
+# inside container
+sed -i 's|external_url .*|external_url "http://10.0.2.15:85"|' /etc/gitlab/gitlab.rb
+gitlab-ctl reconfigure
+gitlab-ctl restart
+exit
+```
+***It will take some time and it won't be fast***