Updated Dockerfile to build successfully when USE_EDGE=true
Updated Dockerfile to build successfully when USE_EDGE=true

nztqa/wekan,wekan/wekan,wekan/wekan,jtickle/wekan,wekan/wekan,GhassenRjab/wekan,johnleeming/wekan,wekan/wekan,johnleeming/wekan,ddanssaert/wekan,mario-orlicky/wekan,ddanssaert/wekan,jtickle/wekan,mario-orlicky/wekan,jtickle/wekan,johnleeming/wekan,oliver4u/sap-wekan,nztqa/wekan,mario-orlicky/wekan,nztqa/wekan,GhassenRjab/wekan,libreboard/libreboard,johnleeming/wekan,libreboard/libreboard,oliver4u/sap-wekan,wekan/wekan,ddanssaert/wekan,GhassenRjab/wekan,oliver4u/sap-wekan