Imports github.com/go-acme/lego/v4/certificate github.com/go-acme/lego/v4/lego github.com/go-acme/lego/v4/log github.com/go-acme/lego/v4/providers/dns github.com/go-acme/lego/v4/registration Standard library imports crypto crypto/rand crypto/rsa crypto/tls crypto/x509 crypto/x509/pkix encoding/asn1 encoding/json encoding/pem fmt io io/ioutil log math/big net net/http os path/filepath runtime strings time