title: Gitlab pipeline fails pushing to Heroku
body: <p>I created my .gitlab-ci.yml:</p>
  
  <pre><code>heroku:
  stage: deploy
  only:
  - master
  script:
  - git remote add heroku https://heroku:$HEROKU_API_KEY@git.heroku.com/my-prohject-09034.git
  - git push -f heroku master
  </code></pre>
  
  <p>I also created my variable $HEROKU_API_KEY In gitlab and set it to protected.
  When I push my code to Gitlab it starts the pipleline but it keeps failing, I get this error:</p>
  
  <pre><code>**error: src refspec master does not match any.**
  </code></pre>
  
  <p>Not sure what the issue is.</p>