View In App not working using Dev Containers

[donverduyn]

Description

"View In App" doesn't work, when the local environment is running from inside a dev container, even though the ports 3000 and 1442 are forwarded. This is not the case when running the dev server locally on the host machine.

Steps to Reproduce

Please be detailed and include all steps and information necessary to reproduce the issue.

1. Create dev container (Node & Typescript)
2. add port 3000 and 1442 to forwardPorts in devcontainer.json
3. Initialize project inside container
4. npm run start
5. localhost:3000 -> View in App

Expected Behavior

That the page doesn't show an error

Actual Behavior

The page shows an error, that the local dev server is not running.