Add container build automation makefile

Makefile

@@ -0,0 +1,16 @@
+REPOSITORY   = vcs.enp.one/skylab/wireguard-proxy
+
+
+.PHONY: help docs
+# source: https://marmelab.com/blog/2016/02/29/auto-documented-makefile.html
+help: ## List Makefile targets
+	$(info Makefile documentation)
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-10s\033[0m %s\n", $$1, $$2}'
+
+
+image:  ## Build image
+	podman build . --tag $(REPOSITORY):latest
+
+push: image  ## Build and publish image
+	podman login $(shell echo $(REPOSITORY) | cut -d '/' -f 1)
+	podman push $(REPOSITORY):latest