[Feature Request] Support airgap for join subcommand

[tu1h]

Is your feature request related to a problem? Please describe. I created a cluster by specifying --package-path which means airgap installation. After that, I attempted to join a new node into the cluster, but no airgap-related option was found in the options list.

Describe the solution you'd like add airgap support for the join subcommand.

Describe alternatives you've considered

Additional context

[JacieChao]

Hi @tu1h Thanks for your feedback. If you create the cluster with the airgap configuration, you don't need to specify the --package-path because AutoK3s will use the same package(which you passed to create this cluster) to execute the join node logic.

[tu1h]

@JacieChao Thanks for the reply. From the information below, the mycluster is a cluster created by --package-path, then I attempted to join a node, but it looks like it doesn't use the airgap package.