-export DEFAULT_REPOSITORY_ROOT="git@github.com:kwentworth"
-# we checkout the git repository to a directory underneath the
-# app storage directory named this:
-export CHECKOUT_DIR_NAME="avenger5"
+if [ -z "$DEFAULT_REPOSITORY_ROOT" ]; then
+ export DEFAULT_REPOSITORY_ROOT="git@github.com:kwentworth"
+fi
+# we checkout the git repository to a directory underneath the app storage
+# directory named this (see below for "this"), if that directory name is found.
+# this is a saco designs infrastructure standard.
+if [ -z "$CHECKOUT_DIR_NAME" ]; then
+ export CHECKOUT_DIR_NAME="avenger5"
+fi