Upgrade to the lastest GitBucket, which has ssh support baked right in.  I'll funnel it's data through port 8022.
Update license to include myself.
Specify directory as data dir.

Set's the data dir as residing at /data.  The Dockerfile also sets a
VOLUME["/data"] to facilitate the assigning of a real directory.
Eg., "-v /var/docker/gitbucket:/data:rw"

The '-v' means we are assigning a volume.  It allows us to make host
directories available to processes inside the container.

Using the config at the beginning, we will be mapping the local
directory (`pwd`/data) to a container's local directory (/data), and
making the data read/write (rw).