Disable HTTPS mode on docker test

.github/workflows/docker.yml

@@ -30,7 +30,7 @@ jobs:
           cache: ${{ github.event_name != 'schedule' }}
       - name: Test
         run: |
-          docker run --name openproject -d -p 8080:80 -e SUPERVISORD_LOG_LEVEL=debug -e SECRET_KEY_BASE=secret ${{ steps.build_and_push.outputs.digest }}
+          docker run --name openproject -d -p 8080:80 -e SUPERVISORD_LOG_LEVEL=debug -e SECRET_KEY_BASE=secret -e OPENPROJECT_HTTPS=false ${{ steps.build_and_push.outputs.digest }}
           sleep 30
           docker logs openproject --tail 100
           wget -O- --retry-on-http-error=503,502 --retry-connrefused http://localhost:8080/api/v3