I don't have one specifically to share, so others are still welcome to post, but I can provide some general information about how to proceed.
Reviewing the methods used in ENCODE projects at the UCSC Genome Browser (http://genome.ucsc.edu -> ENCODE) will give you an overview of common tools involved. Then you can set up a production local or cloud Galaxy, and use the same or analogous tools as available. Check the Tool Shed for options. You want to do some basic QC, map, then do the peak calling in the same order as for other similar expression analysis, so any of those resources/tutorials that are shared on the Main server or in our Wiki would be also worth reviewing.
I also did a quick search using the keywords "DNase" and "Galaxy" and some potentially interesting links came up.
Best, Jen, Galaxy team