Update to match dymaptic/geoblazor requirements

[TimPurdum]

Closes #1

File Org

• Removed mac-specific files. I don't anticipate us ever creating Mac containers.
• Renamed folder to Runner to remove space and make simpler.

Dockerfile Changes

• Updated docker image to Ubuntu 22.04
• Updated GitHub action runner version to 2.325.0
• Added git install so we have a current version of git that supports submodules
• Added powershell install
• Added Azure CLI install
• Set permissions on /usr/share/dotnet to allow for installing .NET as part of the pipeline
• Added fix for a line ending issue I had on windows

Docker-compose.yml Changes

• Vastly simplified. I don't think we need parallel runners, we're usually running one task at a time. If that changes, we could add that back in.
• Moved from environment variables in this file to env_file: .env, so we can use that file as a secrets file (also added that file to .gitignore).
• Switched from using youssef's image to building local image from Dockerfile