Need requirements.txt file for deploy to Railway to work

Page: https://fastht.ml/docs/tutorials/e2e.html

You should mention you need a requirements.txt file to instruct Railway to build the container properly.
It should have "python-fasthtml" in it.

Open the end-to-end tutorial at https://fastht.ml/docs/tutorials/e2e.html and identify where Railway deployment is explained. Document that a requirements.txt file is needed for Railway to build the container, and that it should include "python-fasthtml". Done means the tutorial contains this guidance.

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