[Makefile] Run emacs through docker image ryukinix/lerax

I'm still need tweak something about htmlize being not installed
as default through my dotfiles installation script. I'll release
a new docker image and this will be fixed.

Author: ryukinix

Makefile

@@ -1,15 +1,28 @@
-EMACS_INIT  := ~/.emacs.d/init.el
+EMACS_INIT  := /root/.emacs.d/init.el
 EMACS_LOAD  := -l $(EMACS_INIT)
 EMACS_FLAGS := --batch --kill $(EMACS_LOAD)
 ORG_FILES   := $(wildcard *.org)
 HTML_FILES  := $(patsubst %.org, %.html, $(ORG_FILES))
+DOCKER_IMG  := ryukinix/lerax
+USER        := $(shell id -u):$(shell id -g)
+DOCKER_RUN  := docker run  -w /tmp \
+	                       -v $(shell pwd):/tmp \
+                           --rm \
+                           -t
+STATUS_PREFIX    := "\033[1;32m[+]\033[0m "
+ATTENTION_PREFIX := "\033[1;36m[!]\033[0m "
 
-.PHONY: clean
+.PHONY: clean shell
 
 all: $(HTML_FILES)
 
+shell:
+	$(DOCKER_RUN) -i --entrypoint=/bin/zsh $(DOCKER_IMG)
+
 %.html: %.org
-	emacs $< $(EMACS_FLAGS) -f org-html-export-to-html
+	@printf $(STATUS_PREFIX); echo "COMPILING: $< -> $*.html"
+	@$(DOCKER_RUN) $(DOCKER_IMG) $< $(EMACS_FLAGS) -f org-html-export-to-html
+	@$(DOCKER_RUN) --entrypoint=/bin/chown $(DOCKER_IMG) $(USER) "$*.org"
 
 clean:
 	rm -rf *.html