Merge pull request #19 from 99designs/add-release-instructions

Build arm64 binaries and Docker container and add release instructions

Makefile

@@ -2,17 +2,7 @@ export GO111MODULE=on
 VERSION=$(shell git describe --tags --candidates=1 --dirty)
 FLAGS=-X main.Version=$(VERSION) -s -w
 
-# To create a new release:
-#  $ git tag vx.x.x
-#  $ git push --tags
-#  $ make clean
-#  $ make release     # this will create 3 binaries in ./bin
-#
-#  Next, go to https://github.com/99designs/smartling/releases/new
-#  - select the tag version you just created
-#  - Attach the binaries from ./bin/*
-
-release: bin/smartling-linux-amd64 bin/smartling-darwin-amd64 bin/smartling-windows-386.exe
+release: bin/smartling-linux-amd64 bin/smartling-darwin-amd64 bin/smartling-linux-arm64 bin/smartling-darwin-arm64 bin/smartling-windows-386.exe
 
 bin/smartling-linux-amd64:
 	@mkdir -p bin
@@ -26,5 +16,13 @@ bin/smartling-windows-386.exe:
 	@mkdir -p bin
 	GOOS=windows GOARCH=386 go build -o $@ -ldflags="$(FLAGS)" .
 
+bin/smartling-linux-arm64:
+	@mkdir -p bin
+	GOOS=linux GOARCH=arm64 go build -o $@ -ldflags="$(FLAGS)" .
+
+bin/smartling-darwin-arm64:
+	@mkdir -p bin
+	GOOS=darwin GOARCH=arm64 go build -o $@ -ldflags="$(FLAGS)" .
+
 clean:
 	rm -f bin/*

README.md

@@ -71,3 +71,39 @@ parser_config:                                              # Add a custom confi
   placeholder_format_custom: "%[^%]+%"
 pull_file_path: "{{ TrimSuffix .Path .Ext }}.{{.Locale}}{{.Ext}}" # The naming scheme when pulling files
 ```
+
+### How to make a release
+
+1. Check out the the commit you want to create a release for, and tag it with appropriate semver convention:
+
+```
+$ git tag vx.x.x
+$ git push --tags
+```
+
+2. Create the binaries:
+
+```
+$ make clean
+$ make release
+```
+
+3. Go to https://github.com/99designs/smartling/releases/new
+
+4. Select the tag version you just created
+
+5. Attach the binaries from `./bin/*`
+
+### How to build multi-arch DockerHub image
+
+If building a multi-arch image for the first time, you may need to switch your builder. Checkout Docker guide on [building multi-arch images](https://docs.docker.com/desktop/multi-arch/#build-multi-arch-images-with-buildx)
+
+```
+$ docker buildx create --use
+```
+
+Build and push to target repository
+
+```
+$ docker buildx build --push --tag 99designs/smartling:x.x.x --platform linux/amd64,linux/arm64 .
+```