How to pull a docker image from github registry using singularity?
Usually with docker you have to generate a token and run sth similar to:
docker pull docker.pkg.github.com/{etc}/{etc}/{etc} --username {mygithubusername} --password {generatedtoken}
However,
singularity pull docker://docker.pkg.github.com/{etc}/{etc}/{etc} --username {mygithubusername} --password {generatedtoken}
produces: Error for command "pull": accepts between 1 and 2 arg(s), received 5