gitlab docker check update script

check_update.sh

# pull the latest image
check_update=`docker pull gitlab/gitlab-ce:latest`

# Check if newer image pulled
if [[ $check_update == *"Image is up to date for gitlab/gitlab-ce:latest"* ]]
then
    echo 'Gitlab is already up to date!'
else
    echo 'Start to update Gitlab...'

    # stop existing gitlab container
    docker stop GITLAB_CONTAINER_NAME
    # rename old container
    docker rename GITLAB_CONTAINER_NAME gitlab_old
    # disable boot start
    docker update --restart=no gitlab_old
    # start gitlab container with latest image
    docker run --detach \
        --hostname YOUR_GITLAB_DOMAIN \
        --publish 443:443 --publish 80:80 --publish 22:22 \
        --name GITLAB_CONTAINER_NAME \
        --restart always \
        --volume /path/to/your/gitlab/config:/etc/gitlab \
        --volume /path/to/your/gitlab/logs:/var/log/gitlab \
        --volume /path/to/your/gitlab/data:/var/opt/gitlab \
        gitlab/gitlab-ce:latest
    
    # docker rm gitlab_old #remove old container
fi