I try to publish to canister.io when my local gitea repository gets updated. I have added secrets in the drone.io UI but I get this message in the console:
time="2021-11-08T20:38:33.745829314Z" level=error msg="Handler for POST /v1.41/auth returned error: Get \"https://cloud.canister.io:5000/v2/\": authorization server did not include a token in the response"
The docker plugins executes a standard docker login command to authenticate with your registry. This error indicates docker tried to login to your registry (https://cloud.canister.io) but the registry returned an invalid response (no token in the response). I have not seen this error before, but since it comes from docker and indicates a problem with the registry response, you may want to consider reaching out to your registry admin for support.