Imports
- cloud.google.com/go/compute/metadata
- github.com/go-acme/lego/v4/challenge/dns01
- github.com/go-acme/lego/v4/log
- github.com/go-acme/lego/v4/platform/config/env
- github.com/go-acme/lego/v4/platform/wait
- golang.org/x/net/context
- golang.org/x/oauth2/google
- google.golang.org/api/dns/v1
- google.golang.org/api/googleapi
- google.golang.org/api/option