add GHA variable

Author: valeriupredoi

.github/workflows/run-tests-push.yml

@@ -38,6 +38,7 @@ jobs:
           bgcval2_make_report --help
           download_from_mass --help 
       - shell: bash -l {0}
+        run: echo "hostname=github" >> $GITHUB_ENV
         run: pytest
       - shell: bash -l {0}
         run: sphinx-build -Ea doc doc/build