Best Fixes
Identify the process or container already using the port, then stop it if appropriate.
If both services are needed, remap the new container to a different host port.
Error Fix
How to Fix 'Port Is Already Allocated' in Docker
What causes Docker port binding errors and how to free or change the port safely.
This error means another process or container is already using the host port you are trying to bind. Docker cannot publish the same host port twice at the same time.
Avoid This
Do not kill random processes without confirming they are the right ones.
Do not keep retrying the same run command expecting the bind conflict to clear itself.
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