Update docker guide and add docker-compose.yml

Author: ayufan

docker-compose.yml

@@ -0,0 +1,2 @@
+app:
+  image: gitlab/gitlab-ce:latest

docker/.dockerignore

@@ -1,169 +1,7 @@
 # GitLab Docker images
 
-The GitLab docker image is [available on Docker Hub](https://registry.hub.docker.com/u/gitlab/gitlab-ce/).
-
-## After starting a container
-
-After starting a container you can go to [http://localhost:8080/](http://localhost:8080/) or [http://192.168.59.103:8080/](http://192.168.59.103:8080/) if you use boot2docker.
-
-It might take a while before the docker container is responding to queries.
-
-You can check the status with something like `sudo docker logs -f gitlab`.
-
-You can login to the web interface with username `root` and password `5iveL!fe`.
-
-Next time, you can just use docker start and stop to run the container.
-
-## Run the image
-
-Run the image:
-```bash
-sudo docker run --detach \
-	--publish 8443:443 --publish 8080:80 --publish 2222:22 \
-	--name gitlab \
-	--restart always \
-	--volume /srv/gitlab/config:/etc/gitlab \
-	--volume /srv/gitlab/logs:/var/log/gitlab \
-	--volume /srv/gitlab/data:/var/opt/gitlab \
-	gitlab/gitlab-ce:latest
-```
-
-This will download and start GitLab CE container and publish ports needed to access SSH, HTTP and HTTPS.
-All GitLab data will be stored as subdirectories of `/srv/gitlab/`.
-The container will automatically `restart` after system reboot.
-
-After this you can login to the web interface as explained above in 'After starting a container'.
-
-## Where is the data stored?
-
-The GitLab container uses host mounted volumes to store persistent data:
-- `/srv/gitlab/data` mounted as `/var/opt/gitlab` in the container is used for storing *application data*
-- `/srv/gitlab/logs` mounted as `/var/log/gitlab` in the container is used for storing *logs*
-- `/srv/gitlab/config` mounted as `/etc/gitlab` in the container is used for storing *configuration*
-
-You can fine tune these directories to meet your requirements.
-
-### Configure GitLab
-
-This container uses the official Omnibus GitLab distribution, so all configuration is done in the unique configuration file `/etc/gitlab/gitlab.rb`.
-
-To access GitLab configuration, you can start an bash in a new the context of running container, you will be able to browse all directories and use your favorite text editor:
-```bash
-sudo docker exec -it gitlab /bin/bash
-```
-
-You can also edit just `/etc/gitlab/gitlab.rb`:
-```bash
-sudo docker exec -it gitlab vi /etc/gitlab/gitlab.rb
-```
-
-**You should set the `external_url` to point to a valid URL.**
-
-**You may also be interesting in [Enabling HTTPS](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/doc/settings/nginx.md#enable-https).**
-
-**To receive e-mails from GitLab you have to configure the [SMTP settings](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/doc/settings/smtp.md),
-because Docker image doesn't have a SMTP server.**
-
-**Note** that GitLab will reconfigure itself **at each container start.** You will need to restart the container to reconfigure your GitLab:
-
-```bash
-sudo docker restart gitlab
-```
-
-For more options for configuring the container please check [Omnibus GitLab documentation](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md#configuration).
-
-## Diagnose potential problems
-
-Read container logs:
-```bash
-sudo docker logs gitlab
-```
-
-Enter running container:
-```bash
-sudo docker exec -it gitlab /bin/bash
-```
-
-From within container you can administrer GitLab container as you would normally administer Omnibus installation: https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md.
-
-### Upgrade GitLab to newer version
-
-To upgrade GitLab to new version you have to do:
-1. pull new image,
-```bash
-sudo docker stop gitlab
-```
-
-1. stop running container,
-```bash
-sudo docker rm gitlab
-```
-
-1. remove existing container,
-```bash
-sudo docker pull gitlab/gitlab-ce:latest
-```
-
-1. create the container once again with previously specified options.
-```bash
-sudo docker run --detach \
-	--publish 8443:443 --publish 8080:80 --publish 2222:22 \
-	--name gitlab \
-	--restart always \
-	--volume /srv/gitlab/config:/etc/gitlab \
-	--volume /srv/gitlab/logs:/var/log/gitlab \
-	--volume /srv/gitlab/data:/var/opt/gitlab \
-	gitlab/gitlab-ce:latest
-```
-
-On the first run GitLab will reconfigure and update itself.
-
-### Run GitLab CE on public IP address
-
-You can make Docker to use your IP address and forward all traffic to the GitLab CE container.
-You can do that by modifying the `--publish` ([Binding container ports to the host](https://docs.docker.com/articles/networking/#binding-ports)):
-
-> --publish=[] : Publish a container᾿s port or a range of ports to the host format: ip:hostPort:containerPort | ip::containerPort | hostPort:containerPort | containerPort
-
-To expose GitLab CE on IP 1.1.1.1:
-
-```bash
-sudo docker run --detach \
-	--publish 1.1.1.1:443:443 --publish 1.1.1.1:80:80 --publish 1.1.1.1:22:22 \
-	--name gitlab \
-	--restart always \
-	--volume /srv/gitlab/config:/etc/gitlab \
-	--volume /srv/gitlab/logs:/var/log/gitlab \
-	--volume /srv/gitlab/data:/var/opt/gitlab \
-	gitlab/gitlab-ce:latest
-```
-
-You can then access GitLab instance at http://1.1.1.1/ and https://1.1.1.1/.
-
-### Build the image
-
-This guide will also let you know how to build docker image yourself.
-Please run the command from the GitLab repo root directory.
-People using boot2docker should run all the commands without sudo.
-
-```bash
-sudo docker build --tag gitlab/gitlab-ce:latest docker/
-```
-
-### Publish the image to Dockerhub
-
-- Ensure the containers are running
-- Login to Dockerhub with `sudo docker login`
-
-```bash
-sudo docker login
-sudo docker push gitlab/gitlab-ce:latest
-```
-
-## Troubleshooting
-
-Please see the [troubleshooting](troubleshooting.md) file in this directory.
-
-Note: We use `fig.yml` to have compatibility with fig and because docker-compose also supports it.
-
-Our docker image runs chef at every start to generate GitLab configuration.
+* The official GitLab Community Edition Docker image is [available on Docker Hub](https://registry.hub.docker.com/u/gitlab/gitlab-ce/).
+* The official GitLab Enterprise Edition Docker image is [available on Docker Hub](https://registry.hub.docker.com/u/gitlab/gitlab-ce/).
+* The complete usage guide can be found in [Using GitLab Docker images](http://doc.gitlab.com/omnibus/docker/)
+* The Dockerfile used for building public images is in [Omnibus Repository](https://gitlab.com/gitlab-org/omnibus-gitlab/tree/master/docker)
+* Check the guide for [creating Omnibus-based Docker Image](http://doc.gitlab.com/omnibus/build/README.html#Build-Docker-image)