How to create a docker-compose setup with PostgreSQL and pgAdmin4

docker-compose.yml

version: "3.8"
services:
  db:
    container_name: postgres_container
    image: postgres
    restart: always
    environment:
      POSTGRES_USER: root
      POSTGRES_PASSWORD: root
      POSTGRES_DB: test_db
    ports:
      - "5432:5432"
  pgadmin:
    container_name: pgadmin4_container
    image: dpage/pgadmin4
    restart: always
    environment:
      PGADMIN_DEFAULT_EMAIL: [email protected]
      PGADMIN_DEFAULT_PASSWORD: root
    ports:
      - "5050:80"

Command to Run Postgres and PgAdmin locally

docker compose up
docker container ls -> copy running postgres container ID e.g. 7d12c0473f3a
docker inspect <CONTAINER_ID> -> and copy the IPAddress from the object. e.g. 172.18.0.3
Open PgAdmin localhost:5050 login and add a new server with IPAddress above

docker images
It will print out all image already pulled on your laptop