Add temp dir to docker builder, move to rocky linux

[bluesliverx]

Description

Adds the temporary directory configured in global config (or via env var).

Related Issue

Motivation and Context

There is a temp_dir configuration property in the global config, but it is not respected for certain usages, especially building the source docker image which can be quite large. After modifying this, I noticed that centos:8 images no longer work properly due its deadness. Really, it's very dead. I ported to rockylinux 8 instead which is bug-for-bug compatible.

How Has This Been Tested?

It is a non-invasive change that will need to be tested by the person who first saw signs of the bug. The build will test the rockylinux portions of the changes.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.