CI for monorepo

Two containers are provided to demonstrate continous integration of the monorepo:

• a simple git repo to which the monorepo has been pushed
• a customized Jenkins preconfigured to connect to the git repo and scan for branches with build pipelines

Instructions

1. Run docker-compose up --build to build images and spin up containers
2. Visit Jenkins at http://localhost:8080 - you may need to click "Scan Multibranch Pipeline Now"
3. The git repo is available on a non-standard ssh port to avoid port conflicts: hence export GIT_SSH_COMMAND="ssh -oPort=122 -i $PWD/provision/keypair/.ssh/id_rsa"
4. The private key the you need to access the git repo needs closed file permissions: chmod 600 provision/keypair/.ssh/id_rsa
5. Clone the repo: git clone ssh://git@localhost/home/git/test.git ~/mycheckout
6. Play around with the clone; adding a branch, changing some files, pushing and take note of how Jenkins picks different Jenkinsfiles to build.