diff --git a/coreos/build_coreos_image.sh b/coreos/build_coreos_image.sh
index aa4c520..d911667 100755
--- a/coreos/build_coreos_image.sh
+++ b/coreos/build_coreos_image.sh
@@ -16,9 +16,9 @@
 # all requirements then perform the build.
 
 if [[ -x /usr/bin/docker.io ]]; then
-    sudo ln -sf /usr/bin/docker.io /usr/local/bin/docker
+    sudo -E ln -sf /usr/bin/docker.io /usr/local/bin/docker
 fi
 cd imagebuild/coreos
-sudo pip install -r requirements.txt
-sudo make clean
-sudo make
+sudo -E pip install -r requirements.txt
+sudo -E make clean
+sudo -E make
diff --git a/coreos/full_trusty_build.sh b/coreos/full_trusty_build.sh
index 5610b68..94bfb5b 100755
--- a/coreos/full_trusty_build.sh
+++ b/coreos/full_trusty_build.sh
@@ -3,8 +3,8 @@
 # From a base-trusty node, this should build a CoreOS IPA image
 # suitable for use in testing or production.
 #
-sudo apt-get update
-sudo apt-get install -y docker.io
+sudo -E apt-get update
+sudo -E apt-get install -y docker.io
 
 imagebuild/coreos/build_coreos_image.sh