Why does ip address error occur in docker?

Question

Docker

The problem is this, when starting the docker image, an error occurs - Docker
Pool overlaps with other one on this address space
image - mailu , the file configured them with the same tool, it turned out like this -

# This file is auto-generated by the Mailu configuration wizard.
# Please read the documentation before attempting any change.
# Generated for compose flavor

version: '2.2'

services:

  # External dependencies
  redis:
    image: redis:alpine
    restart: always
    volumes:
      - "/mailu/redis:/data"
    
  # Core services
  front:
    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}nginx:${MAILU_VERSION:-1.8}
    restart: always
    env_file: mailu.env
    logging:
      driver: json-file
    ports:
      - "10.0.0.10:80:80"
      - "::1:80:80"
      - "10.0.0.10:443:443"
      - "::1:443:443"
      - "10.0.0.10:25:25"
      - "::1:25:25"
      - "10.0.0.10:465:465"
      - "::1:465:465"
      - "10.0.0.10:587:587"
      - "::1:587:587"
      - "10.0.0.10:110:110"
      - "::1:110:110"
      - "10.0.0.10:995:995"
      - "::1:995:995"
      - "10.0.0.10:143:143"
      - "::1:143:143"
      - "10.0.0.10:993:993"
      - "::1:993:993"
    volumes:
      - "/mailu/certs:/certs"
      - "/mailu/overrides/nginx:/overrides:ro"


  admin:
    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}admin:${MAILU_VERSION:-1.8}
    restart: always
    env_file: mailu.env
    ports:
      - 127.0.0.1:8080:80
    volumes:
      - "/mailu/data:/data"
      - "/mailu/dkim:/dkim"
    depends_on:
      - redis

  imap:
    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}dovecot:${MAILU_VERSION:-1.8}
    restart: always
    env_file: mailu.env
    volumes:
      - "/mailu/mail:/mail"
      - "/mailu/overrides/dovecot:/overrides:ro"
    depends_on:
      - front

  smtp:
    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}postfix:${MAILU_VERSION:-1.8}
    restart: always
    env_file: mailu.env
    volumes:
      - "/mailu/mailqueue:/queue"
      - "/mailu/overrides/postfix:/overrides:ro"
    depends_on:
      - front

  antispam:
    image: ${DOCKER_ORG:-mailu}/${DOCKER_PREFIX:-}rspamd:${MAILU_VERSION:-1.8}
    hostname: antispam
    restart: always
    env_file: mailu.env
    volumes:
      - "/mailu/filter:/var/lib/rspamd"
      - "/mailu/dkim:/dkim:ro"
      - "/mailu/overrides/rspamd:/etc/rspamd/override.d:ro"
    depends_on:
      - front

  # Optional services



  # Webmail


networks:
  default:
    driver: bridge
    ipam:
      driver: default
      config:
        - subnet: 172.17.0.0/24

The docker interface in the system is
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255

Everything works in Ubuntu 20.04 server

In general, I am new to working with docker, so please do not kick.
Ready to provide other information upon request =)

Answer 1

the problem is that the network 172.17.0.0/24 intersects with the default docker network - 172.17.0.0/16
there are several solutions to the problem
1. remove the networks block in docker-compose.yml, where you describe the default network settings,
then docker itself will create network, most likely 172.18.0.0/16
2. change the subnet for the default network in docker-compose.yml
subnets should not intersect it
makes sense to use the 16 prefix also not
for this and subsequent projects, for example, use networks
172.18.1.0/24
172.18.2.0 /24
172.18.3.0/24
...