Installing Postgres using Docker Compose

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version: "3.9"

services:
  postgres:
    image: postgres:13.22-trixie
    container_name: postgres_13
    restart: always
    environment:
      POSTGRES_USER: root
      POSTGRES_PASSWORD: root
      POSTGRES_DB: mydb
    ports:
      - "5432:5432"
    volumes:
      - ./data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U root"]