docker-compose.yaml

version: "3.9"

# Docker automatically create a network and attach the services (containers) to it.

# DB
services:
  postgres:
    image: postgres:alpine #Image to wire up db
    environment: 
      - POSTGRES_USER=root 
      - POSTGRES_PASSWORD=toor
      - POSTGRES_DB=simple-bank

# BANK
  api: 
    build:
      context: . # Workdir relative to root in this case.
      dockerfile: Dockerfile # Build BANK from Dockerfile of the root.
    ports:
      - "8080:8080"  # Exposing port so we can call BANK from outside the container
    environment: # Establish connection between BANK and DB
      - DB_SOURCE=postgresql://root:toor@postgres/simple-bank?sslmode=disable
    depends_on: 
      - postgres # Waits that postgres is ready and started before launching BANK api.
    entrypoint: ["/app/wait-for.sh", "postgres:5432", "--", "/app/start.sh"] # Runs start.sh once postgres is ready.
    command:  [ "/app/main" ]