How can I check which ports are being used in Docker?

To check the port occupancy situation in Docker containers, you can use the following command:

1. View the currently running containers:
2. List all running containers
3. Enter a specific container:
4. Execute a bash session in a Docker container with the specified container ID or name.
5. Run the following command in the container to check the port usage.
6. Display network connections and listening ports.
7. This command will display the ports in use along with their corresponding processes.

You can also use tools on the Docker host to check for port usage. For example, you can use the netstat or lsof command.

If you want to check the port usage of all Docker containers on the host machine, you can use the following command:

docker port <容器ID或名称>

This command will display the mapped ports of the container.