Eclipse Che 6.5.x（docker）是否能够自动完成php语言？

I made the docker install of Eclipse Che but I can not get the autocomplete to work.

A similar question was raised 2 years ago (more or less) but the project have change a lot since then and this install is via docker.

The IDE preferences and Language Server are correct (I think). Neither the autocomplete neither content assist are working.

Profile/Preferences/IDE

Workspace/Configure Workspace/Installers

Is there anyone who knows how to configure Eclipse Che so that the autocomplete works in PHP?

If you enable PHP language server, you should have a fully functional auto complete. You can give it a try with the latest tag