ci: debug github push

- only push master branch

Refs #11
2 jobs for master in 1 minute and 22 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Check
passed check #202213
docker

00:01:07

 
  Github
failed github #202214
docker

00:00:15

 
Name Stage Failure
failed
github Github
$ git config --global user.email "gitlab@inrae.fr"
$ git config --global user.name "Gitlab CI"
$ git remote add github git@github.com:inrae/hubeau.git || FAILED=true
fatal: remote github already exists.
$ git remote set-url github git@github.com:inrae/hubeau.git
$ git push github master
error: src refspec master does not match any
error: failed to push some refs to 'git@github.com:inrae/hubeau.git'
Cleaning up file based variables
ERROR: Job failed: exit code 1