GitLab Omnibus version check

check_for_gitlab_update.sh

#!/usr/bin/env bash

## Requirements:
## * jq: https://stedolan.github.io/jq/
## * GitLab auth token: https://gitlab.example.com/profile/personal_access_tokens

GITLAB_DOMAIN="https://gitlab.example.com"
AUTH_TOKEN="<insert GitLab auth token here>"
CURRENT_VERSION="$(curl -s -H "Authorization: Bearer ${AUTH_TOKEN}" "${GITLAB_DOMAIN}/api/v4/version" | jq -r '.version')"
STABLE_VERSION="$(curl -s https://gitlab.com/api/v4/projects/13083/repository/tags | jq -r '[ .[] | .name | match("^v?(\\d+\\.\\d+\\.\\d+)$") | .captures[0].string ] | sort_by(split(".") | map(tonumber))[-1]')"

if [ "${CURRENT_VERSION}" != "${STABLE_VERSION}" ]; then
    >&2 echo "A new GitLab version is available: ${STABLE_VERSION}"
    >&2 echo "Current version: ${CURRENT_VERSION}"
    exit 1;
fi

echo "No GitLab update available."
echo "Current version: ${CURRENT_VERSION}"