Add check for dev containers

[koppor]

This PR adds a CI heck for DevContainer builds as a double check if a DevContainer builds.

Maybe, it can even be used as basis to do more build checks - based on the build dev container.

Definition of Done

The PR shall be merged only if all items mentioned in CONTRIBUTING.md have been followed. In case an item is not applicable as described, please provide a short explanation in the description.

• [x] All steps in CONTRIBUTING.md have been handled