Docker container wrapper around Skopeo
docker run --rm -it -v /var/run/docker.sock:/var/run/docker.sock steven166/skopeo:latest <args>
To make it more simple you can use an alias: ~/.bash_profile
alias skopeo='docker run --rm -it -v /var/run/docker.sock:/var/run/docker.sock steven166/skopeo:latest'