What does this do?
This enables your theme to better color your code. There are "textmate scopes" that your theme uses to apply color, this extension adds/improves the textmate scopes which should improve the way your code looks.
NOTE: The default VS Code theme does not color much. Use a theme like one of the following to benefit from the changes:
How do I use it?
Just install the VS Code extension and the changes will automatically be applied to all relevent files.
What is different?
If you'd like to help improve the syntax, take a look at
What if I see a highlighting bug?
Post an issue on https://github.com/jeff-hykin/better-dockerfile-syntax