Working with Editable templates and client libs are covered in this
doc:WKND Tutorial OverviewUsing LESS CSS and developing components in an
editable template - you can design most sites to meet your customer
Your description makes no sense. Components do NOT have policies. An
Editable template have policies that Define what components are allowed
to be used within a page that is based on an editable template.Also
please point to AEM documentation that describes what you refer to as an
App Container. This phrase means nothing in terms of editable templates.