Information request regarding electron builder

[arabovs]

explorer/apps/web/package.json

Line 23 in 9b0a842

"prepare-electron": "rsync -a .next/static/ .next/standalone/apps/web/.next/static && rsync -a public/ .next/standalone/apps/web/public && cp .env .next/standalone/apps/web/.env.local && rsync -a .next/standalone/apps ../desktop && rsync -a .next/standalone/packages ../desktop && rsync -a .next/standalone/resolver ../desktop && rsync -a .next/standalone/package.json ../desktop/package.json && sed -i'.bak' \"s#process\\.chdir(__dirname)##g\" ../desktop/apps/web/server.js"

Could you please explain the purpose here ?