Fixed Failed Symlink in Dockerfile

[BaldPulse]

What this does

Fixed the symlink for python in cpu dockerfile. This failed link caused problems down the line for certain workflows.

How it was tested

1. /usr/bin/python is confirmed to exist in the image
2. The updated dockerfile works in my cloud workflow

How to checkout & try? (for the reviewer)

1. (Re)Build the docker
2. Check that /usr/bin/python opens python3.10

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