diff --git a/README.md b/README.md
index 5ee85f9a..6511ebeb 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ https://play.golang.org/
 
 ```bash
 # build the image
-docker build -t playground .
+docker build -t golang/playground .
 ```
 
 ## Running