Use multi-stage Dockerfile

Author: dominikschulz

Dockerfile

@@ -1,6 +1,14 @@
-FROM prom/busybox:glibc
+FROM quay.io/prometheus/golang-builder as builder
 
-ADD sql_exporter /bin/sql_exporter
+ADD .   /go/src/github.com/justwatchcom/sql_exporter
+WORKDIR /go/src/github.com/justwatchcom/sql_exporter
 
-EXPOSE 9237
-ENTRYPOINT [ "/bin/sql_exporter" ]
+RUN make
+
+FROM        quay.io/prometheus/busybox:glibc
+MAINTAINER  The Prometheus Authors <prometheus-developers@googlegroups.com>
+
+COPY --from=builder /go/src/github.com/justwatchcom/sql_exporter/sql_exporter  /bin/sql_exporter
+
+EXPOSE      9237
+ENTRYPOINT  [ "/bin/sql_exporter" ]