Git Post Commit Hook to build JRuby Rails App

gistfile1.rb

#!/bin/bash
export PATH='/home/git/jruby-1.7.11/bin':$PATH

webapps=/opt/tomcat_ruby/webapps
base=/home/git/passport
repo=$base/passport.git
latest_commit=$(cd $repo && git log --pretty=oneline -n1 |cut -d' ' -f1)
build_dir=$base/builds/$latest_commit

function run {
  echo Running -- "$@"
  eval "$@"
  status=$?
  if test $status -ne 0; then
    echo "Error! exit status was $status for command \"$@\""
    exit 1
  fi
}

echo "Building commit $latest_commit started at $(date)"
if test -d "$build_dir"; then
  echo Warning: build directory $build_dir already exists. This is likely the result of a failed build.
  run rm -Rf $build_dir
fi
run git clone $repo $build_dir
run cd $build_dir
run bundle
run bundle exec warble
run bundle exec rake test:build
run mv $latest_commit.war passport.war
run cp passport.war $webapps
echo build $latest_commit finished at $(date)