url rewriting index.php on tests subdirectories

Hi,
I use apache vhost parameters because htacces are not allowed on my server (the url rewriting for delete the index.php in the url works like a charm)

My problem is on my releases-test subdirectories : before put my new release in production mode i have to test it on the server

ex. for myappli.com my releases tests are here :
myappli.com/releases/1.0.2
myappli.com/releases/1.0.3
...
the release version number change everytime

I did not find the correct url rewriting for a parent subdirectory wich I don't know the name...
In everything I tried, Once I have a CI 404, once I have a apache 404, once I have a 500

I want to have :
/releases/???/index.php/controller/method/parameters -> /releases/???/controller/method/parameters

Any help would be appreciated

Thanks in advance