How do I install dependencies for a single package when using npm workspaces?

Using npm workspaces I have a folder structure like this

+-- package.json
+-- package-lock.json
+-- client
|   `-- package.json
+-- shared
|   `-- package.json
`-- server
    `-- package.json

Normally when creating a production build for a nodejs app I would run npm ci --only=production and then copy node_modules into a build artifact. I'm not sure how to do something like that when working with workspaces.

If I run npm ci --only=production --workspace server it splits the dependencies across ./node_modules and ./server/node_modules. Maybe I should copy (merge?) both node_modules into a build artifact?

Another option could be to copy ./package-lock.json and ./server/package.json into a fresh directory and run npm ci --only=production. It does seem to work but I don't know enough about npm to know if this is a good idea.

The requirements are:

1. node_modules should only include production dependencies for the chosen package
2. The dependency versions should be determined by package-lock.json.