How can HTML be added to .context.xml

I am simply trying to add a modal box when http://localhost:4502/content/geometrixx-gov/en.html loads in the browser. 

I tried to look at the code but it seems there is no html page. Under jcr_root/content/geometrixx-gov/en/ there is only a .context.xml file. Is there a way I can add HTML to a page? I want to add the following

<script type="text/javascript"> $(window).load(function(){ $('#my_modal').modal('show'); }); </script>

and rest of my modal code. 

I just want the modalbox to show up on the en.html page