Debug test

drone.yml

     context: /drone # defaults to root of git repo
     #custom_dns: 127.0.0.11
     storage_driver: overlay2 # aufs, overlay or vfs
-    #debug: true
-    #launch_debug: true
+    debug: true
+    launch_debug: true
     target: builder # Dockerfile build target e.g. builder, debug, production
     dockerfile: Dockerfile
     auto_tag: false