What is the 'host' network type in Docker?

The host network type in Docker means that the container uses the host's network stack directly, without isolation.

This means:

• The container does not get its own IP address, but uses the host's IP.
• All ports of the container are the same as the host's ports.
• Network operations in the container happen as if they are on the host itself.

Example of running a container with host network:

docker run --network host nginx

Using the host network can improve network performance and simplify access to services on the host, but it reduces isolation and security.