Automatically build, tag and push docker images on merge to master (#103)

* port changes

* build overlay on successful merge to master

* fixes to Makefile

* permissions

* dep ensure

* gopath

* let's try vgo

* remove dep

* maybe alpine is the issue

* tagging go version on build

* stupid vgo

* vgo

* adding tags to push

* quotes

* local linting fixes & stupid travis

.travis.yml

@@ -1,9 +1,19 @@
+# make use of vm's 
+sudo: 'required'
+
+# have the docker service set up (we'll
+# update it later)
+services:
+  - 'docker'
+
 language: go
 
 go:
   - 1.10.x
 
 before_install:
+  - './.travis/main.sh'
+  - echo -e "machine api.github.com login coyle password $GITHUB_TOKEN" >> ~/.netrc
   - source scripts/travis-deps.sh
 
 install:
@@ -11,3 +21,10 @@ install:
 
 script:
   - make test
+  - make images
+
+after_success:
+  - if [[ "$TRAVIS_BRANCH" == "master" ]]; then
+      echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin ;
+      make push-images ;
+    fi

.travis/main.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+
+# Set an option to exit immediately if any error appears
+set -o errexit
+
+# Main function that describes the behavior of the 
+# script. 
+# By making it a function we can place our methods
+# below and have the main execution described in a
+# concise way via function invocations.
+main() {
+  setup_dependencies
+  update_docker_configuration
+
+  echo "SUCCESS:
+  Done! Finished setting up Travis machine.
+  "
+}
+
+# Prepare the dependencies that the machine need.
+# Here I'm just updating the apt references and then
+# installing both python and python-pip. This allows
+# us to make use of `pip` to fetch the latest `docker-compose`
+# later.
+# We also upgrade `docker-ce` so that we can get the
+# latest docker version which allows us to perform
+# image squashing as well as multi-stage builds.
+setup_dependencies() {
+  echo "INFO:
+  Setting up dependencies.
+  "
+
+  sudo apt update -y
+  sudo apt install realpath python python-pip -y
+  sudo apt install --only-upgrade docker-ce -y
+
+  sudo pip install docker-compose || true
+
+  docker info
+  docker-compose --version
+}
+
+# Tweak the daemon configuration so that we
+# can make use of experimental features (like image
+# squashing) as well as have a bigger amount of
+# concurrent downloads and uploads.
+update_docker_configuration() {
+  echo "INFO:
+  Updating docker configuration
+  "
+
+  echo '{
+  "experimental": true,
+  "storage-driver": "overlay2",
+  "max-concurrent-downloads": 50,
+  "max-concurrent-uploads": 50
+}' | sudo tee /etc/docker/daemon.json
+  sudo service docker restart
+}
+
+main

Dockerfile

@@ -1,7 +1,11 @@
+# env
+ARG VERSION
 # build
-FROM golang:alpine AS build-env
-ADD . /go/src/storj.io/storj
-RUN cd /go/src/storj.io/storj/cmd/overlay && go build -o overlay
+FROM golang:${VERSION} AS build-env
+COPY . /go/src/storj.io/storj
+RUN go get -u -v golang.org/x/vgo
+RUN cd /go/src/storj.io/storj && vgo install ./...
+RUN cd /go/src/storj.io/storj/cmd/overlay && vgo build -o overlay
 
 
 # final stage

Makefile

@@ -1,10 +1,14 @@
 .PHONY: test lint proto check-copyrights build-dev-deps
 
+TAG    	:= $$(git rev-parse --short HEAD)
+GO_VERSION := 1.10
+
 lint: check-copyrights
 	@echo "Running ${@}"
 	@gometalinter \
 	--deadline=170s \
 	--disable-all \
+	--vendor .\
 	--enable=golint \
 	--enable=goimports \
 	--enable=vet \
@@ -12,6 +16,7 @@ lint: check-copyrights
 	--enable=goconst \
 	--exclude=.*\.pb\.go \
 	--exclude=.*_test.go \
+	--exclude=./vendor/* \
 	./...
 
 check-copyrights:
@@ -65,4 +70,12 @@ clean-local:
 	docker stop redis || true
 	docker rm redis || true
 	# cleanup docker network
-	docker network rm test-net || true
+	docker network rm test-net || true
+
+images:
+	docker build --build-arg VERSION=${GO_VERSION} -t overlay:${TAG}-${GO_VERSION} .
+	docker tag overlay:${TAG}-${GO_VERSION} overlay:latest
+
+push-images:
+	docker push storjlabs/overlay:${TAG}-${GO_VERSION}
+	docker push storjlabs/overlay:latest

go.mod

@@ -30,6 +30,7 @@ require (
 	github.com/spacemonkeygo/spacelog v0.0.0-20180420211403-2296661a0572
 	github.com/spf13/afero v1.1.0
 	github.com/spf13/cast v1.2.0
+	github.com/spf13/jwalterweatherman v0.0.0-20180109140146-7c0cea34c8ec
 	github.com/spf13/pflag v1.0.1
 	github.com/spf13/viper v1.0.2
 	github.com/tyler-smith/go-bip39 v0.0.0-20160629163856-8e7a99b3e716

scripts/check-for-header.sh

@@ -1,6 +1,5 @@
 #!/bin/bash
-
-FILES=$(find $PWD -type f \( -iname '*.go' ! -iname "*.pb.go" \) )
+FILES=$(find $PWD -type f ! -path '*vendor/*' \( -iname '*.go' ! -iname "*.pb.go" \)) 
 for i in $FILES
 do
   if ! grep -q 'Copyright' <<< "$(head -n 2 "$i")"