# Version of docker-compose.
version: '3'

# Containers we're going to run.
services:
   # Our Phoenix container.
   phoenix:
      # The build parameters for this container.
      build:
         # Here we define that it should build from the current directory.
         context: .
      environment:
         DATABASE_URL: ecto://postgres:postgres@db/wb_portfolio
         SECRET_KEY_BASE: super-secret
      ports:
         # Mapping the port to make the Phoenix app accessible outside of the container.
         - '4000:4000'
      depends_on:
         # The DB container needs to be started before we start this container.
         - db
   db:
      # We use the predefined Postgres image.
      image: postgis/postgis:latest
      environment:
         # Set user/password for Postgres.
         POSTGRES_USER: postgres
         POSTGRES_PASSWORD: postgres
         # Set a path where Postgres should store the data.
         PGDATA: /var/lib/postgresql/data/pgdata
      restart: always
      volumes:
         - pgdata:/var/lib/postgresql/data
      ports:
        - 5432:5432
# Define the volumes.
volumes:
   pgdata: