Jenkins builder run

Runs the Jenkins builder on a local repo, for keeping it in sync.

alias sync="docker pull ${builder:=lscr.io/linuxserver/jenkins-builder\:latest} && \
docker run --rm \
  -v $(pwd):/tmp \
  -e LOCAL=true \
  -e PUID=$(id -u) -e PGID=$(id -g) \
  ${builder:=lscr.io/linuxserver/jenkins-builder\:latest} && \
rm -rf .jenkins-external"