#!/bin/sh
#
# For easy server deploys you can create add this post-receive hook to your
# server in a bare repo somewhere like /srv/git/blog.bythewood.me/hooks/post-receive
# and make a git clone in /srv/docker/blog.bythewood.me. This script will then run on
# pushing updates to the server to build and deploy new docker images.


while read oldrev newrev ref; do
  if [ "$ref" = "refs/heads/master" ]; then
    unset GIT_DIR  # unset GIT_DIR so that git pull works correctly
    START_TIME=`date +%s`
    cd /srv/docker/blog.bythewood.me
    git pull
    docker-compose up --build --detach
    docker system prune --force
    END_TIME=`date +%s`
    echo Total build time: `expr $END_TIME - $START_TIME`s
  fi
done