How to do "npm install xxx -S" correctly in this example?

[demobo-com]

No description provided.

[huan]

Did you run into any issue when you run npm install xxx -S?

Please describe your problem in details so that I could be able to understand your situation.

[demobo-com]

In this docker example, I don't see any package.json file. Where should I do "npm init"?

[huan]

I'd like to suggest that you can either try to do it at the root directory or the src directory.