Update Dockerfiles to install packages inside a virtual environment (#39098)
* Removed un-necessary virtual environment creation in Dockerfiles.
* Updated Dockerfiles to install packages in a virtual environment.
* use venv's python
* update
* build and trigger
* trigger
* build and trigger
* build and trigger
* build and trigger
* build and trigger
* build and trigger
* build and trigger
* update
* update
* update
* update
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Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>