testing-go-code-with-postgres/docker-compose.yml

---
version: "3.8"

services:
  postgres:
    image: postgres:16.3-alpine3.18
    command: postgres -c 'max_connections=1000'
    environment:
      POSTGRES_DB: postgres
      POSTGRES_PASSWORD: postgres
      POSTGRES_USER: postgres
      POSTGRES_MULTIPLE_DATABASES: reference, transaction
    healthcheck:
      test: pg_isready --username "postgres" --dbname "reference"
      interval: 1s
      retries: 5
      timeout: 5s
    ports:
      - 32260:5432
    volumes:
      - ./docker-multiple-databases.sh:/docker-entrypoint-initdb.d/docker-multiple-databases.sh:ro
    tmpfs:
      - /var/lib/postgresql/data:rw # Necessary to speed up integration tests.

  migrate-reference:
    image: migrate/migrate:v4.18.3
    command: >
      -source 'file:///migrations'
      -database 'postgresql://postgres:postgres@postgres:5432/reference?sslmode=disable' up
    depends_on:
      postgres:
        condition: service_healthy
    volumes:
      - ./migrations:/migrations:ro

  migrate-transaction:
    image: migrate/migrate:v4.18.3
    command: >
      -source 'file:///migrations'
      -database 'postgresql://postgres:postgres@postgres:5432/transaction?sslmode=disable' up
    depends_on:
      postgres:
        condition: service_healthy
    volumes:
      - ./migrations:/migrations:ro

  migrate:
    image: postgres:16.3-alpine3.18
    command: echo 'All migrations have been successfully applied!'
    depends_on:
      postgres:
        condition: service_healthy
      migrate-reference:
        condition: service_completed_successfully
      migrate-transaction:
        condition: service_completed_successfully