Webpack missing in Docker builder context

It seems that 'webpack' is not available while doing docker builds using training-deploy-project.

yarn run v1.22.17
$ razzle build
internal/modules/cjs/loader.js:905
  throw err;
  ^

Error: Cannot find module 'webpack'
Require stack:
- /usr/src/app/node_modules/mini-css-extract-plugin/dist/index.js
- /usr/src/app/node_modules/mini-css-extract-plugin/dist/cjs.js
- /usr/src/app/node_modules/razzle/config/createConfigAsync.js
- /usr/src/app/node_modules/razzle/scripts/build.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:902:15)
    at Function.Module._load (internal/modules/cjs/loader.js:746:27)
    at Module.require (internal/modules/cjs/loader.js:974:19)
    at require (internal/modules/cjs/helpers.js:101:18)
    at Object.<anonymous> (/usr/src/app/node_modules/mini-css-extract-plugin/dist/index.js:8:39)
    at Module._compile (internal/modules/cjs/loader.js:1085:14)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
    at Module.load (internal/modules/cjs/loader.js:950:32)
    at Function.Module._load (internal/modules/cjs/loader.js:790:12)
    at Module.require (internal/modules/cjs/loader.js:974:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/usr/src/app/node_modules/mini-css-extract-plugin/dist/index.js',
    '/usr/src/app/node_modules/mini-css-extract-plugin/dist/cjs.js',
    '/usr/src/app/node_modules/razzle/config/createConfigAsync.js',
    '/usr/src/app/node_modules/razzle/scripts/build.js'
  ]
}
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
The command '/bin/sh -c yarn build' returned a non-zero code: 1

training-deploy-project Bug Report