Big combo! Rail 7.2 Dockerfile used for Dockerfile.prod, plus bump R…

[epugh]

…uby, plus first step in #nobuild

Commented out calls to terser for minification let us remove some gems and simplify the Dockerfile. Oh, and foreman is finally in our Gemfile.

Description

Motivation and Context

How Has This Been Tested?

Screenshots or GIFs (if appropriate):

Types of changes

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

Checklist:

• [] 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.