docker run

I’d like to push a private gene fusion Docker image to Broad repository to run it on Firecloud, could you point me to some documentation or tutorials on how to write a wdl file to reference and eventually to run the image in Firecloud, the few tutorials I’ve seen so far are all refer to standalone analysis tools, not docker images.
For the image I’d like to run on Firecloud, I can run it like this:
docker run -v /hg19-GRCh37/:sf -i -t bianxi/soapfuse-ref hg19 /sf/cytoBand.txt /sf/hgnc.txt /sf/hg19.fa /sf/hg.gtf
Do I put this command directly in the command part of a wdl file?
Thanks.