this derivation will be built:
  /nix/store/6i26dg7bmi9hydxz4zx9ksyxmzimnxsj-nix-shell.drv
this path will be fetched (0.0 KiB download, 32.4 MiB unpacked):
  /nix/store/9y5wayl2w00hk1yvjzyp8jxbaxlj07y8-skopeo-1.24.1
building '/nix/store/6i26dg7bmi9hydxz4zx9ksyxmzimnxsj-nix-shell.drv'
nix-shell> Running phase: buildPhase

upload niks3: ok