Add Raspberry Pi binary to builds (#189)

* Add Raspberry Pi binary to builds

* Attempt to add arm cross compile to dockerfile

* WIP fix for OSX crosscompiler

* WIP docker build debug

* Fix errors building docker image

docker/compiler/Makefile

@@ -1,6 +1,6 @@
 user=stashappdev
 repo=compiler
-version=1
+version=2
 
 latest:
 	docker build -t ${user}/${repo}:latest .
@@ -13,4 +13,4 @@ build-no-cache:
 
 install: build
 	docker push ${user}/${repo}:${version}
-	docker push ${user}/${repo}:latest
+	docker push ${user}/${repo}:latest