build: prevent Docker errors while building

[lorenzo-cavazzi]

We get a bunch of errors when building due to linting

[...]
#22 24.12 Error: Could not find config file.
#22 24.12     at assertConfigurationExists (/app/node_modules/eslint/lib/config/config-loader.js:80:17)
#22 24.12     at LegacyConfigLoader.loadConfigArrayForFile (/app/node_modules/eslint/lib/config/config-loader.js:414:3)
#22 24.12     at async ESLint.calculateConfigForFile (/app/node_modules/eslint/lib/eslint/eslint.js:1299:4)
#22 24.12     at async ESLint.isPathIgnored (/app/node_modules/eslint/lib/eslint/eslint.js:1339:18) {
#22 24.12   messageTemplate: 'config-file-missing'
#22 24.12 }
#22 24.12 Error: Could not find config file.
#22 24.12     at assertConfigurationExists (/app/node_modules/eslint/lib/config/config-loader.js:80:17)
#22 24.12     at LegacyConfigLoader.loadConfigArrayForFile (/app/node_modules/eslint/lib/config/config-loader.js:414:3)
#22 24.12     at async ESLint.calculateConfigForFile (/app/node_modules/eslint/lib/eslint/eslint.js:1299:4)
#22 24.12     at async ESLint.isPathIgnored (/app/node_modules/eslint/lib/eslint/eslint.js:1339:18) {
#22 24.12   messageTemplate: 'config-file-missing'
#22 24.12 }
[...]

/deploy renku=release-2.18.0

[RenkuBot]

You can access the deployment of this PR at https://renku-ci-ui-4206.dev.renku.ch

[leafty]

Why do we add the eslint config if it's not used in production builds?

[lorenzo-cavazzi]

Oh good catch, I forgot to revert the first commit that was simply copying the config file for the linter

[leafty]

LGTM

Note: we perform the lint action in CI/CD on all commits, so this is reasonable.

[RenkuBot]

Tearing down the temporary RenkuLab deplyoment for this PR.