Add a makefile

Makefile

@@ -0,0 +1,42 @@
+BOOK_NAME := kubernetes-handbook
+BOOK_OUTPUT := _book
+
+.PHONY: build
+build:
+	gitbook build . $(BOOK_OUTPUT)
+
+.PHONY: serve
+serve:
+	gitbook serve . $(BOOK_OUTPUT)
+
+.PHONY: epub
+epub:
+	gitbook epub . $(BOOK_NAME).epub
+
+.PHONY: pdf
+pdf:
+	gitbook pdf . $(BOOK_NAME).pdf
+
+.PHONY: mobi
+mobi:
+	gitbook mobi . $(BOOK_NAME).pdf
+
+.PHONY: install
+install:
+	npm install gitbook-cli -g
+	gitbook install
+
+.PHONY: clean
+clean:
+	rm -rf $(BOOK_OUTPUT)
+
+.PHONY: help
+help:
+	@echo "Help for make"
+	@echo "make          - Build the book"
+	@echo "make build    - Build the book"
+	@echo "make serve    - Serving the book on localhost:4000"
+	@echo "make install  - Install gitbook and plugins"
+	@echo "make epub     - Build epub book"
+	@echo "make pdf      - Build pdf book"
+	@echo "make clean    - Remove generated files"

book.json

@@ -1,5 +1,5 @@
 {
-  "gitbook": "3.2.0",
+  "gitbook": ">= 3.2.2",
   "plugins": ["mermaid", "katex"],
   "pluginsConfig": {
     "mathjax":{