For windows, make sure you have Xming / Xlaunch , for Mac (quartz) and for Linux export Display
ssh -Y 10.250.250.3
and run the following command for firefox
singularity exec /sw/Containers/singularity/images/webbrowsers/firefox/firefox-vnc_latest.sif firefox
Firefox
singularity exec /sw/Containers/singularity/images/webbrowsers/firefox/firefox-vnc_latest.sif firefox