Restructure project

We previously didn't really had any structure in our project apart
from creating a new folder for each package in our project root.
Now that we have accumulated some packages, we use the well-known
Golang project layout in order to clearly communicate our intent
with packages. See https://github.com/golang-standards/project-layout

deploy/docker-make/Dockerfile

@@ -0,0 +1,3 @@
+FROM docker:latest
+
+RUN apk update && apk add make