Fixing docker build

[sean-parent]

Description

• Speedup and simplify docker build
• Fix compiler errors when building with clang-15
• Update readme on building with docker
• Minor reformatting (using existing .clang-format file)

Related Issue

I'm pushing a 2.0.1 Hyde docker image to an associated package (I've never done an associated package... so we'll see if it works!)

After the commit happens, I'll review the outstanding issues and comment (I know there is one on using Hyde on Windows, this is a good solution).

Motivation and Context

The docker image wasn't building; when it was last built, it was a hack. I needed it working to update the stlab docs.

How Has This Been Tested?

I'm using this to update stlab docs.

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.