adding binary

building from source can be done by removing build/rustfmt

Author: aep

Makefile

@@ -0,0 +1,11 @@
+IMAGE_NAME=codeclimate/codeclimate-rustfmt
+
+
+img:build/rustfmt
+	docker build -t "${IMAGE_NAME}" .
+
+
+build/rustfmt:
+	mkdir -p build
+	docker build --tag ${IMAGE_NAME}-build --file Build.dockerfile .
+	docker run --rm --volume "${PWD}/build:/build" ${IMAGE_NAME}-build cp target/debug/rustfmt /build/