install-gosu-binary.sh: install sudo wrapper when executing the script

imagefiles/install-gosu-binary.sh

@@ -40,3 +40,15 @@ chmod +x /usr/local/bin/gosu
 
 # verify that the binary works
 gosu nobody true
+
+
+cat << EOF >> /usr/bin/sudo
+#!/bin/sh
+
+# Emulate the sudo command
+
+exec gosu root:root "\$@"
+
+EOF
+
+chmod +x /usr/bin/sudo

imagefiles/sudo.sh

@@ -1,5 +0,0 @@
-#!/bin/sh
-
-# Emulate the sudo command
-
-exec gosu root:root "$@"