diff --git a/gitlab/README.md b/gitlab/README.md
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+gitlab
+======
+
+## docker-compose.yml
+
+```
+gitlab:
+  image: gitlab/gitlab-ce
+  ports:
+    - "22:22"
+    - "80:80"
+    - "443:443"
+  restart: always
+```
+
+## up and running
+
+```
+$ vi /etc/ssh/sshd_config
+- Port 22
++ Port 2222
+$ systemctl restart ssh
+
+$ docker-compose up -d
+$ docker-compose exec gitlab bash
+>>> vi /etc/gitlab/gitlab.rb
++   external_url 'http://your-domain-name'
+>>> gitlab-ctl reconfigure
+>>> exit
+
+$ firefox http://your-domain-name
+```
+
+## backup volumes
+
+```
+$ docker run --rm \
+             --volumes-from gitlab_gitlab_1 \
+             -v $PWD:/tmp \
+             alpine \
+             tar czf /tmp/gitlab.tgz /etc/gitlab /var/opt/gitlab /var/log/gitlab
+
+$ tar tzf gitlab.tgz
+```