How to publish docker images to docker hub from gitlab-ci

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Gitlab provides a .gitlab-ci.yml template for building and publishing images to its own registry (click "new file" in one of your project, select .gitlab-ci.yml and docker). The file looks like this and it works out of the box :)

# This file is a template, and might need editing before it works on your project.
# Official docker image.
image: docker:latest

services:
  - docker:dind

before_script:
  - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY

build-master:
  stage: build
  script:
    - docker build --pull -t "$CI_REGISTRY_IMAGE" .
    - docker push "$CI_REGISTRY_IMAGE"
  only:
    - master

build:
  stage: build
  script:
    - docker build --pull -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG" .
    - docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG"
  except:
    - master

But by default, this will publish to gitlab's registry. How can we publish to docker hub instead?

docker-registry gitlab-ci
2 Answers

To expand on the GabLeRoux's answer,

I had issues on the pushing stage of the GitLab CI build:

denied: requested access to the resource is denied

By changing my CI_REGISTRY to docker.io (remove the index.) I was able to successfully push.

user_97114440
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