Improve dockerignore

Change-Id: I1ae86cf5b3b4d0001f01e4c752ad71c53d042ab5
diff --git a/.dockerignore b/.dockerignore
index b52276f..23b6ac1 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -14,4 +14,8 @@
 !.dockerignore
 /templates/announcement.html.ep
 /templates/custom
+/dev/js/src/custom
 /lib/Kalamar/Plugin/Announcements.pm
+/script/hypnotoad.pid
+/dev/css
+/dev/demo
\ No newline at end of file