VSCode Devcontainer for the megamek project, follows the wiki guide for getting started found here
You'll need to have VSCode
And have installed the Remote - Containers extension for VSCode, though VSCode should auto prompt you to install it if nessisary when opening this repo.
You'll still need to clone the repo's inside this folder,
And setup your local settings by adding a settings_local.gradle file in each project see here
But once done you should have a self contained environment that will compile the megamek suite. Either run the build tasks, or open a terminal navigate to the project folders and run
gradle run --no-daemon