Rails example - garden.yml for postgres service

postgres-config.yml

kind: Module
description: Postgres container for storing voting results
type: container
name: postgres
image: postgres:9.4
Services:
  - name: postgres
    volumes: # A persistent volume for the data.
      - name: data
        containerPath: /db-data
    ports:  # Expose the default Postgres port
      - name: db
        containerPort: 5432
    healthCheck: 
      command: [ psql, -w, -U, postgres, -d, postgres, -c, "SELECT 1" ]