Deploy with Docker,but too large?

[manooog]

Hi,
I have a package.json file like this:

{
  ...
  "dependencies": {
    "next": "^9.4.4"
  }
}

When I install nextjs with yarn --prod(production deploy with smallest dependencies size),and I get this result:

$ du -d 0 -h node_modules
101M	node_modules

Then, I check the node_modules dir, I find there has some no-use packages in production but still installed.

$ tree --si -L 1 -h node_modules | grep webpack
├── [ 288]  fork-ts-checker-webpack-plugin
├── [ 288]  pnp-webpack-plugin
├── [ 256]  terser-webpack-plugin
├── [ 448]  webpack
├── [ 192]  webpack-sources

I think I don't need webpack in production ~~,so does anyone knows how can I do?