PostgreSQL, MySQL, Redis

docker-compose.yml

version: '3.8' # Specifies the version of the Docker Compose file format

services:
  postgres:
    image: postgres:latest # Uses the latest official PostgreSQL image
    container_name: my_postgres_container
    environment:
      POSTGRES_USER: user # Replace with your desired username
      POSTGRES_PASSWORD: password # Replace with your desired password
      POSTGRES_DB: mydatabase # Replace with your desired database name
    ports:
      - "5432:5432" # Maps port 5432 on the host to port 5432 in the container
    volumes:
      - postgres_data:/var/lib/postgresql/data # Persists PostgreSQL data
    restart: unless-stopped # Restarts the container unless it's manually stopped

  mysql:
    image: mysql:latest # Uses the latest official MySQL image
    container_name: my_mysql_container
    environment:
      MYSQL_ROOT_PASSWORD: rootpassword # Replace with your desired root password
      MYSQL_DATABASE: mydatabase # Replace with your desired database name
      MYSQL_USER: user # Replace with your desired username
      MYSQL_PASSWORD: password # Replace with your desired password
    ports:
      - "3306:3306" # Maps port 3306 on the host to port 3306 in the container
    volumes:
      - mysql_data:/var/lib/mysql # Persists MySQL data
    restart: unless-stopped # Restarts the container unless it's manually stopped

  redis:
    image: redis:latest # Uses the latest official Redis image
    container_name: my_redis_container
    ports:
      - "6379:6379" # Maps port 6379 on the host to port 6379 in the container
    volumes:
      - redis_data:/data # Persists Redis data
    restart: unless-stopped # Restarts the container unless it's manually stopped

volumes: # Defines named volumes for data persistence
  postgres_data:
  mysql_data:
  redis_data: