docker-compose.yml

services:
  postgres:
    image: postgres:${POSTGRES_VERSION:-16-alpine}
    container_name: ${CONTAINER_NAME:-postgres}
    restart: unless-stopped
    environment:
      POSTGRES_USER: ${POSTGRES_USER:?database user required}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?database password required}
      POSTGRES_DB: ${POSTGRES_DB:?database name required}
      PGDATA: /var/lib/postgresql/data/pgdata
    volumes:
      - ${DATA_DIR:-./data}:/var/lib/postgresql/data/pgdata
      - ${LOGS_DIR:-./logs}:/var/log/postgresql
      - ${SCRIPTS_DIR:-./init-scripts}:/docker-entrypoint-initdb.d
    ports:
      - "${DB_PORT:-5432}:5432"
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-postgres} -d ${POSTGRES_DB:-postgres}"]
      interval: ${HEALTHCHECK_INTERVAL:-10s}
      timeout: ${HEALTHCHECK_TIMEOUT:-5s}
      retries: ${HEALTHCHECK_RETRIES:-5}
      start_period: ${HEALTHCHECK_START_PERIOD:-30s}
    networks:
      - postgres_network
    logging:
      driver: "json-file"
      options:
        max-size: "${LOG_MAX_SIZE:-10m}"
        max-file: "${LOG_MAX_FILES:-3}"

networks:
  postgres_network:
    name: ${NETWORK_NAME:-postgres_network}
    driver: bridge