coveooss/tgf ? reverse-engineered prompt

Build me a small Go command line tool that acts like a front door for Terragrunt and Terraform, but runs them inside Docker instead of on the host machine.

It should automatically mount the current folder, my home folder, and my environment into the container, then launch Terragrunt by default. I want it to read settings from a local config file if one exists, and also support pulling config from AWS Parameter Store or a remote location when needed. It should work on Windows, macOS, and Linux, and let me tweak the Docker image, version, tags, extra Docker options, logging level, and a few command aliases from config.

Please also include a simple auto update check so it can remind me or update itself to the latest release, plus install scripts for Mac and Linux and PowerShell for Windows. If you need to check current docs or platform details online while building, go ahead.