Create your own GitLab instance on ubuntu with docker

gitlab-docker-provisioning.sh

#!/bin/bash

# GITLAB_HOSTNAME="gitlab.acme.org"          # <- Change this to your actual domain...
# DOCKER_NAMESPACE="acme"                    # <- Change this to your actual company...
# ALLOWED_IMAGES="$DOCKER_NAMESPACE/*"
# DEFAULT_IMAGE="$DOCKER_NAMESPACE/build"
# ADMIN_IMAGE="$DOCKER_NAMESPACE-dind"

DOCKER_COMPOSE_VERSION=1.15.0

################## Install pre-requirements ##################
if [ `command -v docker-compose | wc -l` == "0" ]
  then
    set -x \
      && echo "Install pre-requirements..." \
      && apt-get update \
      && apt-get install -y \
        linux-image-extra-virtual \
        apt-transport-https \
        ca-certificates \
        curl \
        software-properties-common \
      && echo "Register docker software-repository..." \
      && curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add - \
      && add-apt-repository \
        "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
        $(lsb_release -cs) \
        stable" \
      && echo "Install docker..." \
      && apt-get update \
      && apt-get install -y docker-ce \
      && echo "Install docker-compose..." \
      && curl -L https://github.com/docker/compose/releases/download/$DOCKER_COMPOSE_VERSION/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose \
      && chmod +x /usr/local/bin/docker-compose
  else
    echo "Docker and docker-compose seems to be already installed..."
fi

################## Create a docker-compose file if there is none... ##################
read -p "Enter the hostname of your GitLab instance: " GITLAB_HOSTNAME
if [ ! -f docker-compose.yml ]
  then
    set +x
    echo "Create docker files in folder '$PWD'"
    cat > docker-compose.yml <<EOF
version: '3'
services:
    gitlab:
        image: gitlab/gitlab-ce:latest
        volumes:
            - /var/run/docker.sock:/var/run/docker.sock
            - ./gitlab-ce:/etc/gitlab
            - gitlab-data:/var/opt/gitlab
            - gitlab-logs:/var/log/gitlab
        environment:
            GITLAB_OMNIBUS_CONFIG: "external_url 'http://$GITLAB_HOSTNAME'; gitlab_rails['lfs_enabled'] = true;"
        expose:
            - 80
            - 443
            - 22
        ports:
            - 80:80
            - 443:443
            - 44:22
        depends_on:
            - admin-runner
            - shared-runner
            - priority-runner
    shared-runner:
        image: gitlab/gitlab-runner:latest
        volumes:
            - /var/run/docker.sock:/var/run/docker.sock
            - ./shared-runner/config:/etc/gitlab-runner
    priority-runner:
        image: gitlab/gitlab-runner:latest
        volumes:
            - /var/run/docker.sock:/var/run/docker.sock
            - ./priority-runner/config:/etc/gitlab-runner
    admin-runner:
        image: gitlab/gitlab-runner:latest
        volumes:
            - /var/run/docker.sock:/var/run/docker.sock
            - ./admin-runner/config:/etc/gitlab-runner
volumes:
    gitlab-data:
    gitlab-logs:

EOF
  else
  echo "There is already a docker-compose.yml in '$PWD'. The provisioning will use this one..."

fi

################## Start the containers and make the provisioning for the runners ##################

set -x \
  && mkdir -p gitlab-ce admin-runner priority-runner shared-runner \
  && docker-compose up -d \
  && docker-compose exec gitlab update-permissions

################## Run interactive provisioning for the runners ##################
set +x
echo "Additional instructions:"
echo "Please go to http://$GITLAB_HOSTNAME/ and register the credentials for the root user..."
echo "After that got to: http://$GITLAB_HOSTNAME/admin/runners and copy the registration token."

read -p  "Paste the GitLab registration-token for runners: " TOKEN
read -e -p  "Paste the GitLab registration-token for the admin runner: " -i "$TOKEN" ADMIN_TOKEN

read -e -p "Enter your docker-hub namespace: " -i "$DOCKER_NAMESPACE" DOCKER_NAMESPACE
read -e -p "Enter the allowed images for your runners: " -i "$DOCKER_NAMESPACE/*" ALLOWED_IMAGES
read -e -p "Enter the default image for your runners: " -i "$DOCKER_NAMESPACE/build" DEFAULT_IMAGE
read -e -p "Enter the name of the admin (dind) image: " -i "$DOCKER_NAMESPACE-dind" ADMIN_IMAGE

set -x \
  && docker-compose exec shared-runner gitlab-runner register -n --name "Shared CI runner" -r $TOKEN -u "http://gitlab" --executor "docker" --docker-allowed-images $ALLOWED_IMAGES --docker-pull-policy "if-not-present" --run-untagged --docker-image $DEFAULT_IMAGE \
  && docker-compose exec priority-runner gitlab-runner register -n --name "Priority CI runner" -r $TOKEN -u "http://gitlab" --executor "docker" --docker-allowed-images $ALLOWED_IMAGES --tag-list "priority" --docker-pull-policy "if-not-present" --docker-image $DEFAULT_IMAGE --locked \
  && docker-compose exec admin-runner gitlab-runner register -n --name "Admin CI runner" -r $ADMIN_TOKEN -u "http://gitlab" --executor "docker" --docker-allowed-images '*' --tag-list "admin" --docker-pull-policy "if-not-present" --docker-volumes "/var/run/docker.sock:/var/run/docker.sock" --docker-image $ADMIN_IMAGE \


################## Create docker image for admin purpose ##################
set +x

if [ `docker images | grep dind | wc -l` == 0 ]
  then
    echo "Create dind image for admins" \
    set -x \
      && mkdir -p dind \
      && cat > dind/Dockerfile  <<EOF
FROM alpine:latest

MAINTAINER Arne Schubert <atd.schubert@gmail.com>

RUN set -x \
  && apk --no-cache add docker

VOLUME ["/var/run/docker.sock"]
EOF

    set -x \
      && docker build -t $ADMIN_IMAGE dind
  else
    set +x
    echo "dind image already available to docker..."
fi

## update with docker-compose pull
## maybe restart after that with docker-compose restart

## create other build images directly in gitlab