Universal devcontainer image with pdm and different standalone Python

[huxuan]

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[huxuan]

After some trying, I decide to quit on this feature mostly because it will make the logic of finding Python Interpreter more complicated.

• pdm is supposed to be installed with pipx which needs an existing Python Interpreter, so we need to take care of all these Python Interpreters.
• dev container supposed to have all supported versions of Python Interpreters which makes the image quite large.
• Since there are many Python Interpreters in a single image, it will be easy to break the environments.
• prod container will suffer from finding the Python Intepreter as the build stage may use a different Python Interpreter.