Add Docker as supported platform.
Add Docker as supported platform.

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