In the above example I’ve declared a Docker Bridge network with the range 172.20.0.0/24 and a gateway at 172.20.0.1. I have a service named app with a static IP of 172.20.0.10.
The same is also possible with IPv6, though there are extra steps involved to make IPv6 networking work in Docker and it’s not enabled by default so I won’t go into detail in this comment.
Out of curiosity, what’s the use case for a static IP in the Docker Bridge network? Docker compose assigns hostnames equal to the service name. That is, if you had another container in the app network from my example above, it could just do a DNS lookup for app and it would resolve to 172.20.0.10.
networks: app: ipam: config: - subnet: 172.20.0.0/24 gateway: 172.20.0.1 services: app: image: my-app-image networks: app: ipv4_address: 172.20.0.10In the above example I’ve declared a Docker Bridge network with the range
172.20.0.0/24and a gateway at172.20.0.1. I have a service namedappwith a static IP of172.20.0.10.The same is also possible with IPv6, though there are extra steps involved to make IPv6 networking work in Docker and it’s not enabled by default so I won’t go into detail in this comment.
Out of curiosity, what’s the use case for a static IP in the Docker Bridge network? Docker compose assigns hostnames equal to the service name. That is, if you had another container in the
appnetwork from my example above, it could just do a DNS lookup forappand it would resolve to172.20.0.10.