RewriteEngine On

RewriteBase /oak/
# redirect to HTTPS
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

# redirect to docs subdirectory
# in a per directory context this is always matched against
RewriteRule ^(index\.html)?$ /oak/docs/ [R=302,L]