How to Set a Static Ip Address in a Docker Container

Provide static IP to docker containers via docker-compose

Note that I don't recommend a fixed IP for containers in Docker unless you're doing something that allows routing from outside to the inside of your container network (e.g. macvlan). DNS is already there for service discovery inside of the container network and supports container scaling. And outside the container network, you should use exposed ports on the host. With that disclaimer, here's the compose file you want:

version: '2'

services:
  mysql:
    container_name: mysql
    image: mysql:latest
    restart: always
    environment:
      - MYSQL_ROOT_PASSWORD=root
    ports:
     - "3306:3306"
    networks:
      vpcbr:
        ipv4_address: 10.5.0.5

  apigw-tomcat:
    container_name: apigw-tomcat
    build: tomcat/.
    ports:
     - "8080:8080"
     - "8009:8009"
    networks:
      vpcbr:
        ipv4_address: 10.5.0.6
    depends_on:
     - mysql

networks:
  vpcbr:
    driver: bridge
    ipam:
     config:
       - subnet: 10.5.0.0/16
         gateway: 10.5.0.1

How to set a static IP to my container for a pre-existent external network in docker-compose?

Yes!

I get it.

I just edit the VPN compose to add the subnet in the "networks" options:

version: "3" 
services:   wireguard:
    image: linuxserver/wireguard
    container_name: wireguard
    cap_add:
      - NET_ADMIN
      - SYS_MODULE
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=America/Santiago
      - SERVERURL=auto #optional
      - SERVERPORT=51820 #optional
      - PEERS=5 #optional
      - PEERDNS=auto #optional
      - INTERNAL_SUBNET=10.13.13.0 #optional
    volumes:
      - ./config:/config
      - ./lib/modules:/lib/modules
    ports:
      - 51820:51820/udp
    sysctls:
      - net.ipv4.conf.all.src_valid_mark=1
    restart: unless-stopped

networks:
  default:
    ipam:
      config:
        - subnet: 172.23.0.0/24

and add the static IP in the compose networks options of each docker to connect after.

version: '3.7'

services:
  web:
    container_name: web
    image: nginx
    restart: unless-stopped
    expose:
      - "80"
    volumes:
      - ./:/usr/share/nginx/html:ro
    networks:
      default:
        ipv4_address: 172.23.0.25

networks:
  default:
    external:
      name: wireguard_default

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