Imports github.com/go-acme/lego/v3/platform/config/env github.com/go-acme/lego/v3/challenge/dns01 golang.org/x/oauth2/clientcredentials golang.org/x/net/publicsuffix github.com/go-acme/lego/v3/log Standard library imports bytes context encoding/json errors fmt io/ioutil net/http net/url path strings time