Docker Compose para PostgreSQL

Hoy comparto la receta para poder levantar una base de datos PostgreSQL en Docker Compose.

	version: "3"
	services:
	# Create a service named db.
	db:
	# Use the Docker Image postgres. This will pull the newest release.
	image: "postgres"
	# Give the container the name my_postgres. You can changes to something else.
	container_name: "demo_uno_postgres"
	# Setup the username, password, and database name. You can changes these values.
	environment:
	- POSTGRES_USER=u_demo
	- POSTGRES_PASSWORD=pwd0123456789
	- POSTGRES_DB=db_demo_uno
	# Maps port 54320 (localhost) to port 5432 on the container. You can change the ports to fix your needs.
	ports:
	- "5432:5432"
	# Set a volume some that database is not lost after shutting down the container.
	# I used the name postgres-data but you can changed it to something else.
	volumes:
	- ./postgres-data:/var/lib/postgresql/data