diff --git a/Dockerfile b/Dockerfile
index 893b4cfb..65268e9c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,11 @@
 FROM golang:latest
 MAINTAINER tgic <farmer1992@gmail.com>
 
+RUN apt-get update && apt-get install -y libpam0g-dev libpam-google-authenticator
 
-RUN go get github.com/tg123/sshpiper/sshpiperd
-RUN go install github.com/tg123/sshpiper/sshpiperd
+RUN go get -tags pam github.com/tg123/sshpiper/sshpiperd
+RUN go install -tags pam github.com/tg123/sshpiper/sshpiperd
 
 EXPOSE 2222
-CMD ["/go/bin/sshpiperd"]
+
+CMD ["sh", "-c", "/go/bin/sshpiperd -c=${CHALLENGER}"]