RunAsDocker

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Is your feature request related to a problem? Please describe the problem.

We are trying in our inner dev loop to run the services 99% of the time as native processes for fast cycles.

However, we do want every now and then to test the service using the docker image in aspire.

Currently there is no easy way to do this without breaking type safety.

### Describe the solution you'd like

I would like an extension method for python, typescript and any service with a dockerfile configured to be able to run as docker.

We can then have this behind an envvar / feature flag to turn off or on. But we need the primitive in the framework

### Additional context

We want this locally, but also in integration tests we would want to run using docker and not using the native process.