title: How do I tell Unicorn to run Rails using "bundle exec"?
body: <p>I'm running Unicorn with Rails 5 on Ubuntu 14.04.  I'm running Unicorn as a daemon, using a script, /etc/init.d/unicorn, </p>
  
  <pre><code>case "$1" in
    start)
          check_config
          check_app_root
  
          log_daemon_msg "Starting $DESC" $NAME || true
          if start-stop-daemon --start --quiet --oknodo --pidfile $PID --exec $DAEMON -- $UNICORN_OPTS; then
  </code></pre>
  
  <p>In a separate file, /etc/default/unicorn, I have the DAEMON and UNICORN_OPTS variable defined ...</p>
  
  <pre><code>UNICORN_OPTS="-D -c $CONFIG_RB -E $RAILS_ENV"
  ...
  DAEMON="$GEM_PATH/bin/unicorn"
  </code></pre>
  
  <p>My quesiton is, how do I tell Unicorn that when it runs rails to prefix it with "bundle exec"?  I need bundle exec because I'm getting all these complaints in my unicorn log complaining about gem versions and how bundle exec will save teh day.</p>