This job is stuck because the project doesn‘t have any runners online assigned to it. Go to Runners

1.确认gitlab-runner是不是挂了，如果不是绿色的标点就是挂了
2.没有设置Indicates whether this runner can pick jobs without tags
3.在.gitlab-ci.yml指定tags

stages:
  - build 

docker-build:
  stage: build
  tags:
    - mytag # 这里是gitlab-runner的tag

4.重新装一个runner

wget https://gitlab-ci-multi-runner-downloads.s3.amazonaws.com/latest/binaries/gitlab-ci-multi-runner-linux-amd64
mv gitlab-ci-multi-runner-linux-amd64 /usr/bin/gitlab-runner
chmod +x /usr/bin/gitlab-runner 

mkdir -p /app/gitlab-runner
gitlab-runner install --user=root --working-directory=/app/gitlab-runner

gitlab-runner start
gitlab-runner status

注册
[root@localhost ~]# gitlab-runner register 
Running in system-mode.                            
                                                   
Please enter the gitlab-ci coordinator URL (e.g. https://gitlab.com/):
https://gitlab.com/
Please enter the gitlab-ci token for this runner:
aaxxxxxxxxxG
Please enter the gitlab-ci description for this runner:
[localhost.localdomain]: my-runner
Please enter the gitlab-ci tags for this runner (comma separated):
my-tag
Whether to run untagged builds [true/false]:
[false]: true
Whether to lock Runner to current project [true/false]:
[false]: true
Registering runner... succeeded                     runner=aaHC-nZR
Please enter the executor: docker-ssh, parallels, shell, ssh, virtualbox, docker+machine, kubernetes, docker, docker-ssh+machine:
docker
Please enter the default Docker image (e.g. ruby:2.1):
alpine:latest
Runner registered successfully. Feel free to start it, but if it's running already the config should be automatically reloaded! 
[root@localhost ~]# gitlab-runner restart
[root@localhost ~]# gitlab-runner status
gitlab-runner: Service is running!

helloworld测试
.gitlab-ci.yml

stages:
  - build 

docker-build:
  stage: build
  image: 
    name: golang
    entrypoint: [""]
  tags:
    - my-tag # 这里是gitlab-runner的tag
  script:
    - pwd
    - ls
    - go build 1.go

1.go

package main
import "fmt"
func main() {
    fmt.Println("1111111")
}

可以看到构建成功。

重新安装runner
https://blog.csdn.net/joy_cz/article/details/90400025
https://www.cnblogs.com/houss/p/11341059.html