udemy-go-web-1/postgres/docker-compose-example.yml

# Use postgres/postgres user/password credentials
services:
  db:
    image: postgres
    restart: always
    # set shared memory limit when using docker-compose
    shm_size: 128mb
    # or set shared memory limit when deploy via swarm stack
    #volumes:
    #  - type: tmpfs
    #    target: /dev/shm
    #    tmpfs:
    #      size: 134217728 # 128*2^20 bytes = 128Mb
    environment:
      POSTGRES_PASSWORD: postgres
    ports:
      - 5432:5432

  adminer:
    image: adminer
    restart: always
    ports:
      - 8081:8080

  cache:
    image: redis
    restart: always
    ports:
      - 6379:6379
    command: redis-server --save 60 1 --loglevel warning
    volumes:
      - cache:/data