准备环境
操作系统：Mac OS
Docker版本：20.10.13
使用Docker安装gitlab-runner
docker run -d --name gitlab-runner-docker \
--restart always -v $PWD:/etc/gitlab-runner \
-v /var/run/docker.sock:/var/run/docker.sock \
gitlab/gitlab-runner:latest
安装成功后如下所示：
$PWD:/etc/gitlab-runner 表示在执行docker run命令的当前目录下挂载gitlab-runner的配置文件，这里还需要改一下当前gitlab-runner的配置，否则后面gitlab ci运行时会有如下错误：
error during connect: Post <http://docker:2375/v1.24/auth:> dial tcp: lookup docker on 8.8.8.8:53: no such host
修改后的最终具体config.toml文件如下：
concurrent = 1
check_interval = 0
shutdown_timeout = 0
[session_server]
session_timeout = 1800
[[runners]]
name = "container-runner"
url = "<https://jihulab.com/>"
id = 6249
token = "***********"
token_obtained_at = 2022-12-15T10:49:19Z
token_expires_at = 0001-01-01T00:00:00Z
executor = "docker"
[runners.custom_build_dir]
[runners.cache]
MaxUploadedArchiveSize = 0
[runners.cache.s3]
[runners.cache.gcs]
[runners.cache.azure]
[runners.docker]
tls_verify = false
image = "docker:20.10.7-dind"
privileged = false
disable_entrypoint_overwrite = false
oom_kill_disable = false
disable_cache = false
#volumes项是是必须要修改的项目，即添加上/var/run/docker.sock:/var/run/docker.sock
volumes = ["/var/run/docker.sock:/var/run/docker.sock","/cache"]
shm_size = 0
进入gitlab-runner的容器并注册gitlab-runner
具体操作如下：
$ root@9f005be60f1a:/# gitlab-runner register
Runtime platform arch=amd64 os=linux pid=68 revision=f0a95a76 version=14.5.0
Running in system-mode.
Enter the GitLab instance URL (for example, <https://gitlab.com/>):
我使用的是极狐的gitlab，所以这里填下图对应的url
Enter the registration token:
填下图对应的token
Enter a description for the runner:
[9f005be60f1a]: container-runner
Enter tags for the runner (comma-separated):
docker,runner #tag很重要，可以在.gitlab-ci.yml的job中增加tags字段，如果tags的内容和runner的tag相匹配，则此runner被分配来执行此次CI/CD Pipeline
Registering runner... succeeded runner=sFV-HEkL
Enter an executor: custom, docker, shell, ssh, virtualbox, docker-ssh, parallels, docker+machine, docker-ssh+machine, kubernetes:
docker #指定excutor为docker
Enter the default Docker image (for example, ruby:2.6):
docker:20.10.7-dind #指定docker镜像
Runner registered successfully. Feel free to start it, but if it's running already the config should be automatically reloaded!
注册成功后：
编写.gitlab-ci.yml文件
services:
- docker:20.10.7-dind
stages:
- build
build:
stage: build
tags:
- docker
services:
- docker:20.10.7-dind
before_script:
# 以下环境变量都是gitlab ci专有的
- echo "$CI_REGISTRY_USER"
- echo "$CI_REGISTRY_PASSWORD"
- echo "$CI_REGISTRY_IMAGE"
- echo "$CI_REGISTRY"
script:
- docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
- docker build -t $CI_REGISTRY_IMAGE:2.0.0 .
- docker push $CI_REGISTRY_IMAGE:2.0.0
- docker run --name myapp -d -p 8081:8081 $CI_REGISTRY_IMAGE:2.0.0
项目的目录结构：
使用git commit推送变更后的代码到gitlab，触发gitlab ci/cd，执行流程如下：
在本地docker环境可以查看到对应服务的docker容器已经起来了：
对应服务也可以正常访问了：
参考资料：
以容器的方式运行极狐GitLab Runner_Docker_极狐GitLab_InfoQ写作社区
