Make DCK an example for KorAP-Docker

Change-Id: Idd8d18f24a299d0cc56ff39b75d29faee895ac78
diff --git a/.gitignore b/.gitignore
index 15662c5..24d01da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 /todo.org
 /myindex
-/sandbox
\ No newline at end of file
+/sandbox
+/index
+/json
+dck.zip
\ No newline at end of file