How to resolve the issue of Docker container port mapping failure?

If the port mapping of the Docker container fails, you can try the following solutions:

1. Check if the services inside the container are correctly listening on the specified port. You can use the command netstat -tuln to check if the services are listening on the correct ports inside the container.
2. Check if the same port is already in use on the host machine. If another service on the host machine is using the port, the container’s port mapping will fail. Try modifying the container’s port mapping rules to map the container’s port to another unused port on the host machine.
3. Check if the Docker daemon is properly listening on the host machine’s port. You can verify this by running the command sudo netstat -tuln | grep .
4. Check if the Docker daemon configuration file is correct. Verify the settings in the /etc/docker/daemon.json file and restart the Docker daemon.
5. Check the firewall settings. If the firewall is enabled on the host machine, ensure that communication is allowed between container ports and host ports. Open the necessary ports by modifying the firewall rules.

If the above methods do not solve the problem, you can also try rebuilding and running the container, or attempt using a different port for mapping.