Requests do not work inside docker container

[Shujee]

So I have a Thunder Client collection in my VSCode. The API server is running inside a docker container on the local machine. All requests are running fine.

I export the collection to a json file, right-click my docker container in VSCode, choose "Attach to Visual Studio Code" to open a new VSCode instance that is attached to the container and import my collection there. I then go to collection settings and change base url from https://testserver.cod:9443/api/ (this port is mapped in docker-compose file to 443) to https://localhost/api/. All ThunderClient request now get stuck indefinitely and need to be cancelled.

I'm using free version.