Unable to perform password authentication

[rquackenbush]

Figured it out:

401 unauthorized when pushing an image layer to dockerhub

I have been trying to use curl cmd to push an image layer to my repository on dockerhub here https://hub.docker.com/r/patiner/busybox/. In particular, I want to obtain a url from the registry to upload the layer via POST /v2/<name>/blobs/uploads/. Here are my steps: Step 1. curl -u patiner:pwd -X POST -kv https://registry-1.docker.io/v2/patiner/busybox/blobs/uploads/ Step 2. Now after the above cmd, I get “401 unauthorized” and the header of the response contains Www-Authenticate: Bearer real…

https://gist.github.com/jlhawn/8f218e7c0b14c941c41f

The username / password is sent in a basic authentication header (base64 encoded). Still not sure why the documentation states you can POST to that endpoint.