Add Golang hello-world sample, rename build.sh to match auto-build on Hub.

sample-functions/BaseFunctions/golang/Dockerfile

@@ -0,0 +1,17 @@
+FROM golang:1.7.5-alpine
+
+MAINTAINER alexellis2@gmail.com
+ENTRYPOINT []
+
+WORKDIR /go/src/github.com/alexellis/faas/sample-functions/golang
+COPY . /go/src/github.com/alexellis/faas/sample-functions/golang
+
+RUN go install
+
+ADD https://github.com/alexellis/faas/releases/download/v0.5-alpha/fwatchdog /usr/bin
+RUN chmod +x /usr/bin/fwatchdog
+
+ENV fprocess "/go/bin/golang"
+HEALTHCHECK --interval=1s CMD [ -e /tmp/.lock ] || exit 1
+
+CMD [ "/usr/bin/fwatchdog"]

sample-functions/BaseFunctions/golang/build.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+echo "Building functions/base:golang-1.7.5-alpine"
+docker build -t functions/base:golang-1.7.5-alpine .

sample-functions/BaseFunctions/golang/handler.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+)
+
+func main() {
+	input, err := ioutil.ReadAll(os.Stdin)
+	if err != nil {
+		log.Fatalf("Unable to read standard input: %s", err.Error())
+	}
+	fmt.Println(string(input))
+}