#ports

Docker port is already allocated: Finding and Freeing the Taken Port

docker run fails with port is already allocated or bind: address already in use? The host-side port you mapped is taken — by another container's docker-proxy or a host process. How to tell the two apart, the compose project-name collision scenario, and why 127.0.0.1 and a specific IP binding can coexist.

Port Already in Use? The Complete EADDRINUSE Fix Guide (macOS/Linux/Windows)

Getting EADDRINUSE: address already in use or Port 3000 is already in use on startup? One set of commands to find and free the occupying process on every platform, plus prevention and the tricky cases (ControlCenter, TIME_WAIT, Docker).