Makefile: add rules for docker image build

docker/Dockerfile

@@ -1,16 +0,0 @@
-FROM alpine:3.6
-
-ENV DATA_DIRECTORY /data
-ENV PASSWORD_FILE /data/.htpasswd
-
-RUN apk add --no-cache --update apache2-utils
-
-COPY rest-server docker/*_user /usr/bin/
-
-VOLUME /data
-
-EXPOSE  80
-
-COPY docker/entrypoint.sh /entrypoint.sh
-
-CMD [ "/entrypoint.sh" ]

docker/build.sh

@@ -1,11 +0,0 @@
-#!/bin/sh
-
-set -e
-
-echo "Build binary using golang docker image"
-docker run --rm -ti \
-    -v `pwd`:/go/src/github.com/restic/rest-server \
-    -w /go/src/github.com/restic/rest-server golang:1.9.1-alpine go run build.go
-
-echo "Build docker image restic/rest-server:latest"
-docker build --rm -t restic/rest-server:latest -f docker/Dockerfile .