#downloading postgree
docker pull postgres

#install lib
sudo apt-get install libpq-dev

#setting up
docker run -d \
--name postgres \
-e POSTGRES_USER=root \
-e POSTGRES_PASSWORD=senha \
-v /storage/pgdata:/var/lib/postgresql/data \
-p 5432:5432 \
--restart=always \
postgres

#giving permissions
chmod +777 /storage/pgdata
chmod +777 /storage/pgdata/*

#cleaning cache
rake cache:clean

#rails
rails new my-app -d postgresql