How to create and use a user-defined bridge network?
1}Execute docker network create --driver
When should a bridge network be used versus other networks (like host)?
Bridge networks are commonly used when your application runs in a container that needs to communicate with other containers on the same host. Host network shares the host's network with the container. When you use this driver, the container's network isn't isolated from the host. Overlay networks are best when you need containers running on different Docker hosts to communicate, or when multiple applications work together using Swarm services. Macvlan networks are best when you are migrating from a VM setup or need your containers to look like physical hosts on your network, each with a unique MAC address. IPvlan is similar to Macvlan, but doesn't assign unique MAC addresses to containers. Consider using IPvlan when there's a restriction on the number of MAC addresses that can be assigned to a network interface or port.
How to expose services from a bridge network to the outside world?
The most basic way to expose a port is by using the EXPOSE instruction in your Dockerfile. When specifying ports, it is good practice to include the protocol. If no protocol is specified, TCP is assumed by default. Use -p or -P when running containers to make those ports accessible from outside. Leverage Docker Compose for managing complex multi-container applications. Exposing Docker ports is a fundamental skill that bridges the gap between containerized isolation and practical usability.
How do containers communicate on a bridge network?
A bridge network acts as a software bridge that connects multiple containers together and provides isolation from other networks. Containers within the same bridge network can communicate with each other using their IP addresses or container names.
What is a Docker bridge network?
Bridge Networks are the default network driver for Docker containers. Bridge networks allow containers on the same host to communicate, providing an isolated and secure network environment.