diff --git a/Dockerfile b/Dockerfile
index 706e8d2..55476b7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,10 @@
 FROM golang AS build
 
+ARG GIT_DESC=undefined
+
 WORKDIR /go/src/github.com/Snawoot/dumbproxy
 COPY . .
-RUN CGO_ENABLED=0 go build -a -tags netgo -ldflags '-s -w -extldflags "-static"'
+RUN CGO_ENABLED=0 go build -a -tags netgo -ldflags '-s -w -extldflags "-static" -X main.version='"$GIT_DESC"
 ADD https://curl.haxx.se/ca/cacert.pem /certs.crt
 RUN chmod 0644 /certs.crt