#!/bin/sh
# VARIABLES: _REVISION_ _REPO_

set -euo pipefail
mkdir -p /users && chown keeper /users && chmod 644 /users

init_repo(){ 
    su - keeper 'git clone -b _REVISION_ _REPO_ /users'
}

if [[ ! -d /users/.git ]]; then
    init_repo
elif [[ -d /users && cd /users && ! su - keeper 'git pull origin _REVISION_' ]]; then
    init_repo
fi