do not recommend upgrading all packages
do not recommend upgrading all packages

The command to install skopeo for Ubuntu 20.04 includes a forced upgrade step for all packages.

Installing skopeo does not require the upgrade step, and it could lead to possible issues completely unrelated to the project.

Signed-off-by: Werner Robitza <66d0e304863d1ca0dfcb0b301d57f4099f53b781@gmail.com>

mtrmac/skopeo,mtrmac/skopeo,mtrmac/skopeo