Add container to install

tasks/config/project/install.js

@@ -352,6 +352,7 @@ module.exports = {
           { name: "reset", checked: true },
           { name: "site", checked: true },
           { name: "button", checked: true },
+          { name: "container", checked: true },
           { name: "divider", checked: true },
           { name: "flag", checked: true },
           { name: "header", checked: true },