ERROR: Named volume "postgres:/data/postgres:rw" is used in service "postgres" but no declaration was found in the volumes section

Question

i am trying to build micro service project. and i am getting this error when i am trying to run my docker_compose file:

ERROR: Named volume "postgres:/data/postgres:rw" is used in service "postgres" but no declaration was found in the volumes section.

this is my docker_compose file :

services:
  postgres:
    container_name: postgres
    image: postgres
    environment:
      POSTGRES_USER: amigoscode
      POSTGRES_PASSWORD: password
      PGDATA: /data/postgres
    volumes:
      - postgres:/data/postgres
    ports:
      - "5432:5432"
    networks:
      - postgres
    restart: unless-stopped
  pgadmin:
    container_name: pgadmin
    image: dpage/pgadmin4
    environment:
      PGADMIN_DEFAULT_EMAIL: ${PGADMIN_DEFAULT_EMAIL:[email protected]}
      PGADMIN_DEFAULT_PASSWORD: ${PGADMIN_DEFAULT_PASSWORD:-admin}
      PGADMIN_CONFIG_SERVER_MODE: 'False'
    volumes:
      - pgadmin:/var/lib/pgadmin
    ports:
      - "5050:80"
    networks:
      - postgres
    restart: unless-stopped

any hint will be appreciated.

Answer 1

You are missing the relative path, this would work. Either use a relative path or a fixed one!

services:
  postgres:
    container_name: postgres
    image: postgres
    environment:
      POSTGRES_USER: amigoscode
      POSTGRES_PASSWORD: password
      PGDATA: /data/postgres
    volumes:
      - ./postgres:/data/postgres
    ports:
      - "5432:5432"
    networks:
      - postgres
    restart: unless-stopped
  pgadmin:
    container_name: pgadmin
    image: dpage/pgadmin4
    environment:
      PGADMIN_DEFAULT_EMAIL: ${PGADMIN_DEFAULT_EMAIL:[email protected]}
      PGADMIN_DEFAULT_PASSWORD: ${PGADMIN_DEFAULT_PASSWORD:-admin}
      PGADMIN_CONFIG_SERVER_MODE: 'False'
    volumes:
      - ./pgadmin:/var/lib/pgadmin
    ports:
      - "5050:80"
    networks:
      - postgres
    restart: unless-stopped