Dragonfly CMS and Coppermine Standalone (the application that this entire site is about) have as much in common as humans and apes: they share the same ancestors, that's all. They are incompatible. And furthermore: we don't know nor support Dragonfly, so the question doesn't apply.
If you plan to use Dragonfly, go to the Dragonfly web page and ask for support there.
The Coppermine version
we provide support for can be bridged with Mambo,
Joomla and
Typo3 and there is even a visual integration as well as a bridging for
Zikula (formerly known as postnuke). Additionally, there is a Coppermine port for
PragmaMX and afaik for
e107. The ports go unsupported here. As far as bridging is concerned, the pre-requisites can be found in the docs we provide. If the other stuff that is not "just" bridged has particular requirements is unknown to me, but I strongly doubt that you'd want to install a full CMS without having a clue how much work it is to set it up in the first place. You better describe what you actually want to accomplish. Posting a link to your gallery is mandatory as well as per
board rules (you agreed to respect them when signing up), so you should do that first. There also is a
MiniCMS plugin that might fit your needs as well.
In fact, this forum is full of postings that describe what others did to make coppermine fit their needs, and there is reference to many other apps that others have brought coppermine to interact with (like WordPress, phpBB, SMF only to name a few). You can't expect me (or anyone else) to come up with a posting here that shows you all possible options that exist to make coppermine and another application interact on a web page.
Your question is not related to initial install, so I moved it.