Clone it locally:

$ git clone https://github.com/sting2804/vagrant-postgresql_9.4.git testapp

# Enter the cloned directory:
$ cd testapp

Usage

# Start up the virtual machine:
$ vagrant up

# Stop the virtual machine:
$ vagrant halt


Your PostgreSQL database has been setup and can be accessed on your local machine on the forwarded port (default: 15432)
  Host: localhost
  Port: 15432
  Database: admin
  Username: admin
  Password: adminpass

Admin access to postgres user via VM:
  vagrant ssh
  sudo su - postgres

psql access to app database user via VM:
  vagrant ssh
  sudo su - postgres
  PGUSER=admin PGPASSWORD=adminoass psql -h localhost admin

Env variable for application development:
  DATABASE_URL=postgresql://myapp:dbpass@localhost:15432/admin

Local command to access the database via psql:
  PGUSER=admin PGPASSWORD=adminpass psql -h localhost -p 15432 admin