401 with Wercker internal/docker-push to dockerhub

Question

The relevant (I think) part of my wercker.yml is:

deploy:
  steps:
    - internal/docker-push:
      username: $USERNAME
      password: $PASSWORD
      entrypoint: /pipeline/source/pipeline
      tag: latest
      repository: colezlaw/pipeline
      registry: https://registry.hub.docker.com

I have a repository on hub called colezlaw/pipeline, and I've got my dockerhub credentials set in the pipeline on wercker. However, once it tries to push to docker, it's getting a 401:

Error interacting with this repository: colezlaw/pipeline PUT https://registry.hub.docker.com/v1/repositories/colezlaw/pipeline/ returned 401

Is there something else I need to set up on the dockerhub side?

Answer 1

Instead of setting the credentials in the pipeline add the environment variables $USERNAME, and $PASSWORD in Environment tab similar to the image below.