diff --git a/build.sh b/build.sh
index 3633442..7abbbf0 100755
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,7 @@
 #!/bin/sh
 
-cd /home/lanhui/englishpal2/EnglishPal
+DEPLOYMENT_DIR=/home/lanhui/EnglishPal
+cd $DEPLOYMENT_DIR
 
 # Stop service
 sudo docker stop EnglishPal
@@ -10,9 +11,7 @@ sudo docker rm EnglishPal
 sudo docker build -t englishpal .
 
 # Run the application
-sudo docker run -d --name EnglishPal -p 90:80 -v /home/lanhui/englishpal2/EnglishPal/app/static/frequency:/app/static/frequency -v /home/lanhui/englishpal2/EnglishPal/app/static/:/app/static/ -t englishpal  # for permanently saving data
+sudo docker run -d --name EnglishPal -p 90:80 -v ${DEPLOYMENT_DIR}/app/static/frequency:/app/static/frequency -v ${DEPLOYMENT_DIR}/app/static/:/app/static/ -t englishpal  # for permanently saving data
 
 # Save space.  Run it after sudo docker run
 sudo docker system prune -a -f
-
-