cleanup shellcheck SC2086

tests/unit/10_tar.bats

@@ -13,8 +13,11 @@ teardown() {
 deploy_app_tar() {
   APP_TYPE="$1"; APP_TYPE=${APP_TYPE:="nodejs-express"}
   TMP=$(mktemp -d -t "dokku.me.XXXXX")
-  rmdir $TMP && cp -r ./tests/apps/$APP_TYPE $TMP
-  cd $TMP
+
+  rmdir "$TMP" && cp -r "./tests/apps/$APP_TYPE" "$TMP"
+  pushd "$TMP" &> /dev/null || exit 1
+  trap 'popd &> /dev/null || true; rm -rf "$TMP"' RETURN INT TERM
+
   shift 1
   tar c . $* | ssh dokku@dokku.me tar:in $TEST_APP || destroy_app $?
   sleep 5 # nginx needs some time to itself...