Git Hook Pre-Receive from https://rafpe.ninja/2017/02/11/gitlab-custom-pre-receive-hook/

pre-receive

#!/usr/bin/env ruby

our_secret = "aaaa"

params = gets
oldref = params.split()[0]
newref = params.split()[1]
refname = params.split()[2]



changed_files = `git diff --no-commit-id --name-only #{oldref}..#{newref}`

            if changed_files.include? '.gitlab-ci.yml' then
            commit_messages = `git log --pretty=%s #{newref} | head -3`.split("\n")

             unless commit_messages.include? our_secret
              puts "================================================================= "
              puts "██████╗ ███████╗     ██╗███████╗ ██████╗████████╗███████╗██████╗  "
              puts "██╔══██╗██╔════╝     ██║██╔════╝██╔════╝╚══██╔══╝██╔════╝██╔══██╗ "
              puts "██████╔╝█████╗       ██║█████╗  ██║        ██║   █████╗  ██║  ██║ "
              puts "██╔══██╗██╔══╝  ██   ██║██╔══╝  ██║        ██║   ██╔══╝  ██║  ██║ "
              puts "██║  ██║███████╗╚█████╔╝███████╗╚██████╗   ██║   ███████╗██████╔╝ "
              puts "╚═╝  ╚═╝╚══════╝ ╚════╝ ╚══════╝ ╚═════╝   ╚═╝   ╚══════╝╚═════╝  "
              puts "================================================================= "
              puts ""
              puts " oldref is #{oldref}"
              puts " newref is #{newref}"
              puts " refname is #{refname}"
              puts " "
              puts " We are very very sorry but your change seems to violate our policies! "
              puts " Please check with your nearest Guru! :) ERROR_ID: 001        "
              puts "================================================================= "

              exit 1
             end

            end # if changed_files.include?
exit 0