Button up Dockerfile and related Linux dev environment documentation

[abeltrano]

Type

• Bug fix
• Feature addition
• Feature update
• Documentation
• Build Infrastructure

Side Effects

• Breaking change
• Non-functional change

Goals

• Ensure Dockerfile and Linux development environment documentation are up to date.

Technical Details

• Use apt-get instead of apt in Dockerfile as the former is intended to be used in scripts and not CLI scenarios.
• Update Dockerfile build date.
• Collect and use common apt-get arguments -yyq --no-install-recommends into a Dockerfile argument so they're not literally repeated on each invocation of apt-get.
• Sort package listing in apt-get install commands.

Test Results

• Successfully built netremote-build and netremote-dev images and published them to DockerHub.

Reviewer Focus

• Consider whether the Linux development environment documentation is sufficient to get it setup without additional information.

Future Work

• None

Checklist

• Build target all compiles cleanly.
• clang-format and clang-tidy deltas produced no new output.
• Newly added functions include doxygen-style comment block.