Prevent copy and paste error due to not existed alpine tag.
After copy & paste from document and edit registration-token
, maybe it's a good choice to just make it work.
alpine:3 is not existed, it will cause gitlab ci job error:
Running with gitlab-runner 11.10.1 (1f513601) on docker-runner yF8bCAHM
Using Docker executor with image alpine:3 ...
Pulling docker image alpine:3 ...
ERROR: Job failed: Error response from daemon: manifest for alpine:3 not found (executor_docker.go:168:3s)