Fix auth function setup

cmd/rdpgw/main.go

@@ -155,7 +155,7 @@ func main() {
 		ReceiveBuf: conf.Server.ReceiveBuf,
 	}
 	if conf.Caps.TokenAuth {
-		gwConfig.VerifyTunnelAuthFunc = security.VerifyPAAToken
+		gwConfig.VerifyTunnelCreate = security.VerifyPAAToken
 		gwConfig.VerifyServerFunc = security.CheckSession(security.CheckHost)
 	} else {
 		gwConfig.VerifyServerFunc = security.CheckHost

dev/docker/Dockerfile

@@ -28,7 +28,7 @@ RUN git clone https://github.com/bolkedebruin/rdpgw.git /app && \
     chmod u+s /opt/rdpgw/rdpgw-auth && \
     chown -R 1001 /opt/rdpgw
 
-FROM busybox 
+FROM scratch 
 
 # make tempdir in case filestore is used
 ADD tmp.tar /