Add makefile, with docker builds using binary

Dockerfile

@@ -1,13 +1,11 @@
-FROM golang:1.10.1-alpine3.7
+FROM alpine:3.7
 
 LABEL maintainer="Minio Inc <[email protected]>"
 
-WORKDIR /go/src/github.com/minio/
-COPY . /go/src/github.com/minio/minio-operator
+COPY minio-operator /usr/bin/
 
 RUN \
      apk add --no-cache ca-certificates 'curl>7.61.0' && \
-     cd /go/src/github.com/minio/minio-operator && \
-     go install
+     chmod +x /usr/bin/minio-operator
 
-CMD ["minio-operator"]
+CMD ["minio-operator"]

Makefile

@@ -0,0 +1,11 @@
+PWD := $(shell pwd)
+TAG ?= "minio/k8s-operator"
+
+all: build
+
+build:
+	@CGO_ENABLED=0 go build --ldflags "-s -w" -o $(PWD)/minio-operator
+	@docker build -t $(TAG) .
+
+install: all
+	@docker push $(TAG)