Add git to build step

Dockerfile

@@ -3,7 +3,7 @@ FROM golang:alpine AS build
 RUN mkdir /build
 ADD . /build
 WORKDIR /build
-RUN apk update && apk add --no-cache gcc build-base linux-headers
+RUN apk update && apk add --no-cache git gcc build-base linux-headers
 
 ARG VERSION=dev
 ENV VERSION=${VERSION}