No, I meant building the container on the cloud. You can do so by linking your GitHub with SingularityHub and create a GitHub repository with your recipe in it, e.g. here. Check this for a more detailed set of instructions. It is convenient this way since you can debug any errors through the log file if the build fails at any point. And once built, pull the container via
singularity pull --name <name>.simg shub://<path_to_container>
Yeah what I meant was to build remotely with the --builder option, much like above.
chmod -R 777 <path_to_directory>
Although I would highly advise against it. Try the above method. I am pretty sure it would work.