docker / docker/docker-py

Error with --email flag deprecation for `docker login`

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Dominant language
Python
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Description

In the 17.0.6 docker engine update, the -e and --email flags were deprecated. Sending the -e flag now results in a 400 error. The client should attempt to check the docker version or re-try without the email flag if it fails. This is a breaking change in the docker application, and should be fixed as soon as possible.

https://docs.docker.com/engine/deprecated/#-e-and---email-flags-on-docker-login

Originally encountered this issue with

$(aws ecr get-login)

This calls:

docker login -u AWS -p <TOKEN> -e none <ECR_URL>

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing docker login handling for the deprecated -e and --email flags, using the Docker deprecation notice and the aws ecr get-login example as context. Confirm the current Docker Engine behavior and determine how the client should handle a 400 response; done means docker login no longer fails because of the deprecated email flag.

Written by the indexing model from the issue text.

Assessment

Tech stack
docker, python
Domain
authentication, cli
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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