diff --git a/Dockerfile b/Dockerfile
index 263e10f..8f20940 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,4 +6,5 @@ env PATH="$binPath:$wdir/utils:${PATH}"
 run rm -r ~/pintos && ln -sf $wdir ~/pintos
 copy checker $binPath/checker
 copy setOutputFrom $binPath/setOutputFrom
+run expand ~
 entrypoint ["checker"]
diff --git a/loader.sh b/loader.sh
deleted file mode 100644
index 647f4f7..0000000
--- a/loader.sh
+++ /dev/null
@@ -1,8 +0,0 @@
-#!/bin/sh -l
-
-phase=$1
-
-cd /pintos
-echo "Target $phase"
-
-docker build -f actions.Dockerfile --build-arg phase="$phase" .