diff --git a/build.sh b/build.sh
index c7c3019..9ac3f1a 100755
--- a/build.sh
+++ b/build.sh
@@ -4,6 +4,7 @@ cd /home/lanhui/englishpal
 
 # Stop service
 sudo docker stop EnglishPal
+sudo docker rm EnglishPal
 
 # Rebuild container. Run this after modifying the source code.
 sudo docker build -t englishpal .