Dockerfile to go standard package location

build/ci/drone.yml

@@ -22,7 +22,7 @@ steps:
   settings:
     auto_tag: true
     auto_tag_suffix: linux-amd64
-    dockerfile: Dockerfile
+    dockerfile: build/package/Dockerfile
     repo: imartyn/karaokardbot
     username:
       from_secret: docker_username