<p>need help with the default gitlab auto devops process.  i am using gitlab 12.8.5 by docker, and minikube v1.8.1. when i follow the <a href="http://gitlab.bubumaoapp.com/help/topics/autodevops/quick_start_guide" rel="nofollow noreferrer">quick start guide</a> i stuck in the auto build process, bellow is the screenshot:
<a href="https://i.stack.imgur.com/zwkWQ.png" rel="nofollow noreferrer">invalid reference format</a></p>

<pre><code> Checking out 901de3a8 as master...
 Skipping Git submodules setup
$ if [[ -z "$CI_COMMIT_TAG" ]]; then # collapsed multi-line command
00:03
 $ /build/build.sh
 Building Heroku-based application using gliderlabs/herokuish docker image...
 invalid reference format
 invalid reference format
 invalid argument "/master:901de3a8bd5573f4a049b1457d28bc1592ba6bf9" for "-t, --tag" flag: invalid reference format
 See 'docker build --help'.
 ERROR: Job failed: command terminated with exit code 1
</code></pre>

<p>also i have found some similar questions here :</p>

<ul>
<li><a href="https://stackoverflow.com/questions/50486026/gitlab-ci-invalid-argument-on-job-for-docker-build">GitLab CI invalid argument on job for Docker build</a></li>
<li><a href="https://stackoverflow.com/questions/58571382/gitlab-default-autodevops-ci-invalid-tag-name">GitLab default autodevops CI: invalid tag name</a></li>
<li><a href="https://stackoverflow.com/questions/55061307/gitlab-auto-devops-failure-invalid-reference-format">GitLab Auto DevOps Failure - Invalid Reference Format</a></li>
</ul>

<p>however, i still can't find the solution. please help,thinks.</p>

<p>Billy</p>

Billy Shen
<p>in case someone have the same issue. i fixed the error by enable the Container Registry, thanks</p>
