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docker - gitlab-ci.yml：如何使用 dind 创建 docker 镜像

问题描述

我的 GitLab-ci.yml 中有以下逻辑：

stages:
  - build
  - deploy

variables:
    IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG

make_patch:
  image: node:10.19
  stage: build
  script:
    - npm install
    - make
    - make source-package
  cache:
    key: ${CI_COMMIT_REF_SLUG}
    paths:
    - node_modules/
  artifacts:
    when:
    paths:
      - test.tar.bz2
    expire_in: 2 days

  test_feature:
    stage: deploy
    image: dockerhub_image:123
    script:
      - apt-get install bzip2
      - apt-get install curl -y
      - ls -lah
      - curl -kL https://mygitlabserver/namespace/project/-/jobs/artifacts/master/download?job=make_patch
      - tar -xvjf test.tar.bz2
      - docker login -u $CI_DEPLOY_USER -p $CI_DEPLOY_PASSWORD $CI_REGISTRY
      - docker build --no-cache -t $IMAGE_TAG .
      - docker push $IMAGE_TAG

所以我试图通过构建一个nodejs图像来测试我的repo中的变化；如果它可以编译，那么我会保存一个 zip 文件，其中包含在潜在生产系统中需要使用的所有 Web 文件。然后我从公共 docker hub 下载现有图像（因为这实际上是我们正在修改的开源应用程序）。我想在那里更新 web 文件夹，然后尝试从中创建一个 docker 容器并将其保存到我的项目存储库中。正如您从下面的输出中看到的那样，它目前正在失败，因为正如@marvin 指出的那样， dockerhub_image:123 in 没有 docker cli。

523$ docker login -u $CI_DEPLOY_USER -p $CI_DEPLOY_PASSWORD $CI_REGISTRY
524/bin/bash: line 107: docker: command not found
525[cmd] sh exited 1
526[cont-finish.d] executing container finish scripts...
527[cont-finish.d] done.
528[s6-finish] waiting for services.
529[s6-finish] sending all processes the TERM signal.
530[s6-finish] sending all processes the KILL signal and exiting.
532ERROR: Job failed: exit code 1

我在我的项目中定义了一个 Deploy 令牌，如下所示：

Name: webtoken
Username: webtoken-1
Created: Aug 6, 2020
Expires: Never
Scopes
read_repository, read_registry, write_registry, read_package_registry, write_package_registry

我找到了这篇文章：Gitlab CI - docker: command not found

但是我很难理解在我的案例中我会在哪里包含对 docker 图像的引用。或者我可以在这个“test_feature”工作中添加一个服务条款吗？

services:
  - docker:dind

对不起，补救问题。我对 docker 和 GitLab 都是新手。我尝试像这样更改 test_feature 作业，但它仍然失败并出现相同的错误：

  test_feature:
    stage: deploy
    image: dockerhub_image:123
    services:
      - docker:dind
    script:
      - apt-get install bzip2
      - apt-get install curl -y
      - ls -lah
      - curl -kL https://mygitlabserver/namespace/project/-/jobs/artifacts/master/download?job=make_patch
      - tar -xvjf test.tar.bz2
      - docker login -u $CI_DEPLOY_USER -p $CI_DEPLOY_PASSWORD $CI_REGISTRY
      - docker build --no-cache -t $IMAGE_TAG .
      - docker push $IMAGE_TAG

标签： dockergitlabgitlab-ci

解决方案

要扩展@Alessandro Chiitolina 的答案：

首先，如果您想查看在 GitLab CI 中使用 docker-in-docker 方法构建 Docker 的整个工作示例，请点击此处。

Secondly, if I don't know how to do something in GitLab CI, I find it usefult to check Auto DevOps templates. The one for Docker build using docker-in-docker is available here. You can even import it to your pipeline directly as described here.

Finally, instead of docker-in-docker approach, you can also use kaniko, as described here.

As a side note - there's no need to manually download the artifact from make_patch in test_feature job - it will be downloaded automatically - see here for details.

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