Add docker to local build pipeline

Dockerfile

@@ -1,21 +1,19 @@
 # Build image
-FROM golang:1.12.2-alpine3.9 AS build
+FROM alpine:latest AS build
 
 # Build requirements
-RUN apk add --no-cache git make
+RUN apk add --no-cache ca-certificates
 
-# Copy context
-COPY . /work
-
-# Build
-RUN cd /work && make build
+# Copy binary
+COPY dist/linux_amd64/keyvault-certdeploy /
 
 # ---
 
 # Runtime image
-FROM scratch as app
+FROM scratch
+LABEL maintainer="Matthias Blaser <[email protected]>"
 
 COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
-COPY --from=build /work/keyvault-certdeploy /keyvault-certdeploy
+COPY --from=build /keyvault-certdeploy /keyvault-certdeploy
 
 CMD ["/keyvault-certdeploy"]

Makefile

@@ -3,6 +3,7 @@ OUT := keyvault-certdeploy
 PKG := github.com/emgag/keyvault-certdeploy
 PKG_LIST := $(shell go list ${PKG}/... )
 GO_FILES := $(shell find . -name '*.go' )
+VERSION := $(shell git describe --always --dirty --tags)
 
 all: build
 
@@ -36,4 +37,10 @@ clean:
 	-@rm -vf ${OUT}
 	-@rm -vrf dist
 
-
+docker:
+	docker build \
+		-t emgag/keyvault-certdeploy:${VERSION} \
+		-t emgag/keyvault-certdeploy:latest\
+		.
+	docker push emgag/keyvault-certdeploy:${VERSION}
+	docker push emgag/keyvault-certdeploy:latest

README.md

@@ -2,6 +2,10 @@
 
 [![Build Status](https://travis-ci.org/emgag/keyvault-certdeploy.svg?branch=master)](https://travis-ci.org/emgag/keyvault-certdeploy)
 [![Go Report Card](https://goreportcard.com/badge/github.com/emgag/keyvault-certdeploy)](https://goreportcard.com/report/github.com/emgag/keyvault-certdeploy)
+[![Docker Pulls](https://img.shields.io/docker/pulls/emgag/keyvault-certdeploy.svg)](https://hub.docker.com/r/emgag/keyvault-certdeploy)
+[![Image Layers](https://images.microbadger.com/badges/image/emgag/keyvault-certdeploy.svg)](https://microbadger.com/images/emgag/keyvault-certdeploy "Get your own image badge on microbadger.com")
+[![Latest Version](https://images.microbadger.com/badges/version/emgag/keyvault-certdeploy.svg)](https://microbadger.com/images/emgag/keyvault-certdeploy "Get your own version badge on microbadger.com")
+
 
 **keyvault-certdeploy** is a helper tool used to facilitate X.509 certificate deployment to Linux VMs with [Azure Key Vault](https://azure.microsoft.com/en-us/services/key-vault/). Unlike the built-in method via VM secrets, it does support RSA and ECDSA certificates, local deployment and update hooks. It can be used to push certificates to Key Vault from a Let's Encrypt deployment hook and to refresh VM certificates on boot or to periodically poll for updates via cronjob. 
 
@@ -133,18 +137,16 @@ Certificates are pushed to the vault as an unencrypted, single PEM-formated file
 ### On Linux
 
 ```
-$ mkdir keyvault-certdeploy && cd keyvault-certdeploy
-$ export GOPATH=$PWD
-$ go get -d github.com/emgag/keyvault-certdeploy
-$ cd src/github.com/emgag/keyvault-certdeploy
-$ make install
+$ go get -u github.com/emgag/keyvault-certdeploy
 ```
 
 will download the source and build binary called _keyvault-certdeploy_ in $GOPATH/bin.
 
 ### Using Docker
 
 ```
+$ go get -u github.com/goreleaser/goreleaser
+$ $(go env GOPATH)/bin/goreleaser --snapshot --rm-dist
 $ docker build -t keyvault-certdeploy:latest .
 ```