Need to install vim, not vi. Docker build fixed.

Author: jberkus

vagrant/setup/package_install.sh

@@ -36,7 +36,7 @@ apt-get -y -q install pgbouncer
 # install alternate editor and tmux and other utilities
 apt-get -y -q install joe
 apt-get -y -q install nano
-apt-get -y -q install vi 
+apt-get -y -q install vim
 apt-get -y -q install tmux
 
 echo ''