Add working demo and video munaul to this will be even GREAT!

[meicale]

It is such a cool thing. I fork it and play around. I think this can work with vscode is cool, I just have 2 other thoughts.

1. Can this work with project with has its own docker container? I mean, we have different dockerfiles or images for echo project to make thing stable and reliable. HOW to integrate this method with different project with less efforts (such as avoiding modified dockerfile and rebuild image, etc).
2. This docker container can has its editor such as neovim, vscode, etc in the container itself. Which make it even standlone and portable and make it essier to with with different project even as descriped in 1.
   I think it is cool if we can provide more demos with this repo and more people will became interested in this. Thx!