Release preparations

-v flag now prints version.
Dockerfile added.
CHANGELOG added.
Build hook for Docker Hub added.

Author: kaancfidan

CHANGELOG.md

@@ -0,0 +1,19 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+There are currently no unreleased changes.
+
+## v0.0.0 - 2020-06-01
+This is the first version that includes the following functionality:
+- YAML configuration support
+    - Route matching with standard wildcards
+    - Array and value claim checks
+- HMAC, RSA and EC signing key support for JWT authentication
+- Claims-based authorization
+- Pure authorization server and reverse proxy modes
+
+[Unreleased]: https://github.com/kaancfidan/bouncer/compare/v0.0.0...master

Dockerfile

@@ -0,0 +1,11 @@
+FROM golang:1.13 AS builder
+ARG VERSION
+WORKDIR /go/src/github.com/kaancfidan/bouncer
+COPY . .
+RUN go get -d -v
+RUN sed -i "s/0.0.0-VERSION/"$VERSION"/" main.go
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags "-s -w"
+
+FROM scratch
+COPY --from=builder /go/src/github.com/kaancfidan/bouncer/bouncer bouncer
+ENTRYPOINT ["./bouncer"]

hooks/build

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+docker build -t $IMAGE_NAME --build-arg VERSION=`git describe --tags || git describe` .

main.go

@@ -119,7 +119,8 @@ func parseFlags() *flags {
 		expRequired:   "true",
 		nbfRequired:   "true",
 	}
-
+	
+	printVersion := flag.Bool("v", false, "print version and exit")
 	flag.StringVar(&f.signingKey, "k",
 		lookupEnv("BOUNCER_SIGNING_KEY", ""),
 		"cryptographic signing key")
@@ -162,6 +163,11 @@ func parseFlags() *flags {
 
 	flag.Parse()
 
+	if *printVersion {
+		fmt.Printf("Bouncer version: %s\n", version)
+		os.Exit(0)
+	}
+
 	return &f
 }