archive old images #62

[h3kker]

upload unused images to azure cold storage

• not download within 1 year
• created >6 months ago+never downloaded

or something.

[ ] download date
[ ] maintenance routine to move unused
[ ] set Image.location to storage url, e.g. https://myaccount.blob.core.windows.net/mycontainer/myblob
[ ] would need to wrap send_file for pulls. can singularity/oras/... do redirects?
[ ] maintenance/command to move back to local storage

https://pypi.org/project/cloudstorage/ seems dubious (documentation?)