Gitlab runner deploy auto-setup and register

setup.sh

#!/usr/bin/env bash
set -e
# Usage: bash setup.sh
# This script is supposed to be ran with root user.
# @see https://dockerswarm.rocks/gitlab-ci/

# GitLab runner setup
register_token=${GITLAB_TOKEN:?}
register_host=${GITLAB_HOST:-https://gitlab.com}
runner_image='gitlab/gitlab-runner:latest'
runner_container='gitlab-runner'
has_volume=$(docker volume ls | grep -o gitlab-runner || :)

echo "runner: update"
docker pull "${runner_image}"
docker stop --time="3600" "${runner_container}" || true
docker rm "${runner_container}" || true
docker run \
	--name "${runner_container}" \
	--detach \
	--restart always \
	--volume gitlab-runner:/etc/gitlab-runner \
	--volume /var/run/docker.sock:/var/run/docker.sock \
	"${runner_image}" || true
docker ps

echo "${has_volume}"
if [ -z "${has_volume}" ]; then
	echo "runner: register"
	docker exec -it --env REGISTER_NON_INTERACTIVE=true kidways_gitlab-runner \
		gitlab-runner \
			register \
			--name "${HOSTNAME:?}.deploy.runner" \
			--executor docker \
			--docker-image docker:19 \
			--docker-volumes /var/run/docker.sock:/var/run/docker.sock \
			--url "${register_host}" \
			--registration-token "${register_token:?}" \
			--tag-list "deploy:${HOSTNAME:?}"
fi