Add docker build and push to travis (#569)

* Add docker build and push to travis

.travis.yml

@@ -4,6 +4,9 @@ go: 1.11.x
 
 env: GO111MODULE=on
 
+services:
+  - docker
+
 # for some reason /usr/local is owned by a different user in travis, so we transfer ownership to the current user:
 before_install: sudo chown -R $(whoami) /usr/local
 
@@ -28,6 +31,10 @@ jobs:
       - make genproto
       - make test-tidy
       - make test-fmt
+  - stage: docker-push
+    name: "Push to dockerHub"
+    script: 
+      - make dockerpush
 
 cache:
   directories:

Makefile

@@ -1,12 +1,19 @@
 BINARY := go-spacemesh
 VERSION := 0.0.1
 COMMIT = $(shell git rev-parse HEAD)
-BRANCH = $(shell git rev-parse --abbrev-ref HEAD)
+SHA = $(shell git rev-parse --short HEAD)
+# BRANCH = $(shell git symbolic-ref --short HEAD)
 BIN_DIR = $(shell pwd)/build
 CURR_DIR = $(shell pwd)
 CURR_DIR_WIN = $(shell cd)
 export GO111MODULE = on
 
+ifndef TRAVIS_PULL_REQUEST_BRANCH
+	BRANCH := $(shell git rev-parse --abbrev-ref HEAD)
+else
+	BRANCH := $(TRAVIS_PULL_REQUEST_BRANCH)
+endif
+
 # Setup the -ldflags option to pass vars defined here to app vars
 LDFLAGS = -ldflags "-X main.version=${VERSION} -X main.commit=${COMMIT} -X main.branch=${BRANCH}"
 
@@ -15,6 +22,8 @@ PKGS = $(shell go list ./...)
 PLATFORMS := windows linux darwin
 os = $(word 1, $@)
 
+DOCKER_IMAGE_NAME=go-spacemesh
+
 all: install build
 .PHONY: all
 
@@ -88,3 +97,15 @@ cover:
 		tail -n +2 cover.out >> cover-all.out;)
 	go tool cover -html=cover-all.out
 .PHONY: cover
+
+dockerbuild:
+	docker build -t $(DOCKER_IMAGE_NAME):latest .
+.PHONY: dockerbuild
+
+dockerpush: dockerbuild
+	echo "$(DOCKER_PASSWORD)" | docker login -u "$(DOCKER_USERNAME)" --password-stdin
+	docker tag $(DOCKER_IMAGE_NAME) spacemeshos/$(DOCKER_IMAGE_NAME):$(BRANCH)
+	docker tag $(DOCKER_IMAGE_NAME) spacemeshos/$(DOCKER_IMAGE_NAME):$(SHA)
+	docker push spacemeshos/$(DOCKER_IMAGE_NAME):$(BRANCH)
+	docker push spacemeshos/$(DOCKER_IMAGE_NAME):$(SHA)
+.PHONY: dockerpush