teacher2018

fixed: enable --skip-tls-verify during the build phase

1

### Describe what this PR does / why we need it Command "sealer build", kubefileparse.imageEngine not support http shema in pull phase automatically. so we can do something to expand...

### What happen? Kubefile ``` FROM registry:5000/sealerio/kubernetes:v1.22.15 ``` When executing the build process，error output and interruption ended $ sealer build --debug -f Kubefile -t registry:5000/my-cluster:v1.0.0 . ERROR: ...... http: server...