remove npm cache from image
remove npm cache from image

storytouch/etherpad-lite,ether/etherpad-lite,joequant/etherpad-lite,ether/etherpad-lite,aptivate/etherpad-lite,storytouch/etherpad-lite,storytouch/etherpad-lite,aptivate/etherpad-lite,joequant/etherpad-lite,joequant/etherpad-lite,aptivate/etherpad-lite,joequant/etherpad-lite,aptivate/etherpad-lite,ether/etherpad-lite