CHUKWA-824.  Fixed build instructions.
diff --git a/BUILD.txt b/BUILD.txt
index eb1d47a..854aebd 100644
--- a/BUILD.txt
+++ b/BUILD.txt
@@ -12,6 +12,6 @@
 
 $ mvn clean package
 
-Run Chukwa
+Run Chukwa:
 
-docker run -it -p 4080:4080 chukwa/chukwa
+$ docker run -it -p 4080:4080 chukwa/chukwa