docker: Add ARM docker container dockerfile. (#3574)

.travis.yml

@@ -1,6 +1,9 @@
 go_import_path: github.com/minio/minio
 sudo: required
 
+services:
+ - docker
+
 dist: trusty
 
 language: go
@@ -13,12 +16,28 @@ env:
 - ARCH=i686
 
 script:
+# Refer https://blog.hypriot.com/post/setup-simple-ci-pipeline-for-arm-images/
+# prepare qemu
+- docker run --rm --privileged multiarch/qemu-user-static:register --reset
+# build image
+- docker build -t minio/minio:edge-armhf . -f Dockerfile.armhf
+# test image
+- docker run --rm minio/minio:edge-armhf version
+
+## Run all the tests
 - make
 - make test GOFLAGS="-timeout 15m -race -v"
 - make coverage
 
+# push image
+- >
+  if [ "$TRAVIS_BRANCH" == "master" ] && [ "$TRAVIS_PULL_REQUEST" == "false" ]; then
+    docker login -u="$DOCKER_USER" -p="$DOCKER_PASS"
+    docker push minio/minio:edge-armhf
+  fi
+
 after_success:
 - bash <(curl -s https://codecov.io/bash)
 
 go:
-- 1.7.4
+- 1.7.5

Dockerfile

@@ -1,16 +1,17 @@
-FROM golang:1.7-alpine
+FROM alpine:3.5
 
-WORKDIR /go/src/app
+ENV GOPATH /go
+ENV PATH $PATH:$GOPATH/bin
+ENV CGO_ENABLED 0
 
-COPY . /go/src/app
+WORKDIR /go/src/github.com/minio/
 
-RUN \
+RUN  \
-	apk add --no-cache git && \
+     apk add --no-cache --virtual .build-deps git go musl-dev ca-certificates && \
-	go-wrapper download && \
+     go get -v -d github.com/minio/minio && \
-	go-wrapper install -ldflags "$(go run buildscripts/gen-ldflags.go)" && \
+     cd /go/src/github.com/minio/minio && \
-	mkdir -p /export/docker && \
+     go install -v -ldflags "$(go run buildscripts/gen-ldflags.go)" && \
-	rm -rf /go/pkg /go/src && \
+     rm -rf /go/pkg /go/src /usr/local/go && apk del .build-deps
-	apk del git
 
 EXPOSE 9000
 ENTRYPOINT ["minio"]

Dockerfile.armhf

@@ -0,0 +1,18 @@
+FROM resin/armhf-alpine:3.5
+
+ENV GOPATH /go
+ENV PATH $PATH:$GOPATH/bin
+ENV CGO_ENABLED 0
+
+WORKDIR /go/src/github.com/minio/
+
+RUN  \
+     apk add --no-cache --virtual .build-deps git go musl-dev ca-certificates && \
+     go get -v -d github.com/minio/minio && \
+     cd /go/src/github.com/minio/minio && \
+     go install -v -ldflags "$(go run buildscripts/gen-ldflags.go)" && \
+     rm -rf /go/pkg /go/src /usr/local/go && apk del .build-deps
+
+EXPOSE 9000
+ENTRYPOINT ["minio"]
+VOLUME ["/export"]