Make node_exporter statically buildable for linux/amd64

.promu.yml

@@ -1,7 +1,8 @@
-go: 1.5.4
+go: 1.6.2
 repository:
     path: github.com/prometheus/node_exporter
 build:
+    flags: -a -tags 'netgo static_build'
     ldflags: |
         -X main.Version={{.Version}}
         -X {{repoPath}}/collector.Version={{.Version}}
@@ -24,4 +25,5 @@ crossbuild:
         - linux/arm
         - linux/arm64
         - netbsd/arm
+        - linux/ppc64
         - linux/ppc64le

Dockerfile

@@ -1,4 +1,4 @@
-FROM        quay.io/prometheus/busybox:glibc
+FROM        quay.io/prometheus/busybox:latest
 MAINTAINER  The Prometheus Authors <prometheus-developers@googlegroups.com>
 
 COPY node_exporter /bin/node_exporter

README.md

@@ -1,9 +1,8 @@
 # Node exporter [![Build Status](https://travis-ci.org/prometheus/node_exporter.svg)][travis]
 
 [![CircleCI](https://circleci.com/gh/prometheus/node_exporter/tree/master.svg?style=shield)][circleci]
-[![Image Size & Layers](https://imagelayers.io/badge/prom/node-exporter:master.svg)][imagelayers]
-[![Docker Stars](https://img.shields.io/docker/stars/prom/node-exporter.svg)][hub]
-[![Docker Pulls](https://img.shields.io/docker/pulls/prom/node-exporter.svg)][hub]
+[![Docker Repository on Quay](https://quay.io/repository/prometheus/node-exporter/status)][quay]
+[![Docker Pulls](https://img.shields.io/docker/pulls/prom/node-exporter.svg?maxAge=604800)][hub]
 
 Prometheus exporter for machine metrics, written in Go with pluggable metric
 collectors.
@@ -107,4 +106,4 @@ docker run -d -p 9100:9100 --net="host" prom/node-exporter
 [travis]: https://travis-ci.org/prometheus/node_exporter
 [hub]: https://hub.docker.com/r/prom/node-exporter/
 [circleci]: https://circleci.com/gh/prometheus/node_exporter
-[imagelayers]: https://imagelayers.io/?images=prom/node-exporter:master
+[quay]: https://quay.io/repository/prometheus/node-exporter