Merge branch '506-improve-ddev-build-frontend' into 'develop'

Resolve "Improve ddev build-frontend"

Closes #506

See merge request t3o/typo3.org!381

.ddev/commands/web/build-frontend.sh

@@ -4,6 +4,5 @@
 ## Usage: build-frontend
 ## Example: "ddev build-frontend"
 
-npm --prefix private/typo3conf/ext/t3olayout/Build install
+npm --prefix private/typo3conf/ext/t3olayout/Build ci
 npm --prefix private/typo3conf/ext/t3olayout/Build run-script build
-rm -Rf private/typo3conf/ext/t3olayout/Build/node_modules