Build with docker

Dockerfile

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+FROM golang:alpine as builder
+
+ENV CGO_ENABLED=0
+ENV GOOS=linux
+ENV GOARCH=amd64
+ENV GO111MODULE=on
+
+RUN apk update && apk add --no-cache git ca-certificates tzdata && update-ca-certificates
+
+RUN adduser -D -g '' appuser
+
+ADD . ${GOPATH}/src/app/
+WORKDIR ${GOPATH}/src/app
+
+RUN go build -a -installsuffix cgo -ldflags="-w -s" -o /go/bin/speedtest_exporter
+
+FROM scratch
+ARG VCS_REF
+ARG BUILD_DATE
+
+LABEL org.label-schema.build-date=$BUILD_DATE \
+      org.label-schema.vcs-ref=$VCS_REF \
+      org.label-schema.vcs-url="https://github.com/nlamirault/speedtest_exporter" \
+      org.label-schema.docker.cmd="docker run tnwhitwell/speedtest_exporter" \
+      org.label-schema.schema-version="1.0" \
+      maintainer="tom@whi.tw"
+
+COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=builder /etc/passwd /etc/passwd
+
+COPY --from=builder /go/bin/speedtest_exporter /go/bin/speedtest_exporter
+
+USER appuser
+
+ENTRYPOINT [ "/go/bin/speedtest_exporter" ]

hooks/build

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+#!/bin/bash
+# $IMAGE_NAME var is injected into the build so the tag is correct.
+docker build --build-arg VCS_REF=`git rev-parse --short HEAD` \
+  --build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
+  -t $IMAGE_NAME .

hooks/post_push

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+#!/bin/bash
+docker tag $IMAGE_NAME $DOCKER_REPO:$SOURCE_COMMIT
+docker push $DOCKER_REPO:$SOURCE_COMMIT
+export GO_VERSION=$(cat version/version.go | awk 'match($0, /[0-9].[0-9].[0-9]/) {print substr( $0, RSTART, RLENGTH )}')
+docker tag $IMAGE_NAME $DOCKER_REPO:${GO_VERSION}
+docker push $DOCKER_REPO:${GO_VERSION}