I have tried the code below to clear the cache of the index page to show the latest content to the user.
<filesMatch "index.html">
FileETag None
<ifModule mod_headers.c>
Header unset ETag
Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate"
Header set Pragma "no-cache"
Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT"
</ifModule>
</filesMatch>
But when I try this code it gives forbidden error.