create folder
1)
mkdir docker-compose-pg
cd docker-compose-pg

2)
vi docker-compose.yml

insert this text:
"
  postgredb:
    restart: always
    image: postgres:latest
    ports:
      - "5432:5432"
      - "localhost:50000:5432"
    environment:
      - DEBUG=false

      - DB_USER=
      - DB_PASS=
      - DB_NAME=
      - DB_TEMPLATE=

      - DB_EXTENSION=

      - REPLICATION_MODE=
      - REPLICATION_USER=
      - REPLICATION_PASS=
      - REPLICATION_SSLMODE=

"
:wq - SAVE IT

3) run container
   docker-compose up

   creates pg service accessible from outer network by port 50000
   docker-compose down - destroy this service/continer
   docker-compose stop - stop container
   docker-compose start - start container. All data stored from previos start still exists!!