Small project with docker

hello all ,
i hope newbies are welcome here .
so i landed on rancher from a google search … looking for something … ended up installing it … and my previous containers showed up and i love the interface … after reading a few threads, it seems you guys are using it for quite a few interesting setups.
so here is where i am … i need to run an image which runs on qemu and connect it to another container .
so i run the image like this

#qemu-system-i386 image.img …options …

i would like this to communication with another container running on my server , the containers are communicating between themselves via docker0

is this achievable somehow ?
can someone experienced answer this for me ?
i would be eternally grateful.