I'm trying to piece together from the wiki and the dockerfile how to run the s3proxy against an Azure Blob Storage account. This is what I have:

docker run \
    --publish 80:80 \
    --env S3PROXY_AUTHORIZATION=none \
    --env JCLOUDS_PROVIDER=azureblob \
    --env JCLOUDS_ENDPOINT=arnottmedia.core.windows.net \
    --env JCLOUDS_IDENTITY=arnottmedia \
    --env JCLOUDS_CREDENTIAL=9qaV... \
    andrewgaul/s3proxy

But this fails when accessing http://localhost:80 with this error:

HTTP ERROR 400 endpoint.getHost() is null for /arnottmedia.core.windows.net/?comp=list&include=metadata

I tried with the endpoint set to just arnottmedia as well, to no avail. I don't know what to put for identity because Azure only offers 'keys' (no IDs).

Any suggestions?