infra: Add Makefile to build the website

The most important rules defined in this Makefile are:
- `make`: build the website locally in the `.output` directory
- `make serve`: to open a `python3` server which allows you to view the
content at `http://localhost:8080/operating-systems`
- `make cleanall`: stop the server and remove the container and all
docker images

Signed-off-by: Teodor Dutu <[email protected]>

Makefile

@@ -0,0 +1,41 @@
+REPO_NAME = operating-systems
+IMAGE_NAME = $(REPO_NAME)/docusaurus:latest
+CONTAINER_NAME = open-edu-hub-$(REPO_NAME)-bash
+OUTPUT_DIR = $$PWD/.output/$(REPO_NAME)
+
+.PHONY: all buildimg build serve run_bash enter_bash stop_bash clean cleanall
+
+all: build
+
+buildimg:
+	docker build -f ./Dockerfile --tag $(IMAGE_NAME) .
+
+build: buildimg
+	@echo "Building content. This will take a while (several minutes) ..."
+	@echo "After the build, run"
+	@echo ""
+	@echo "       make serve"
+	@echo ""
+	@mkdir -p $(OUTPUT_DIR)
+	docker run --rm -v $$PWD/:/content -v $(OUTPUT_DIR):/output $(IMAGE_NAME)
+
+serve:
+	@echo "Point your browser to http://localhost:8080/$(REPO_NAME)"
+	@cd $(OUTPUT_DIR)/.. && python3 -m http.server 8080
+
+run_bash: buildimg
+	@mkdir -p $(OUTPUT_DIR)
+	docker run -d -it --entrypoint /bin/bash --name $(CONTAINER_NAME) -v $$PWD/:/content -v $(OUTPUT_DIR):/output $(IMAGE_NAME)
+
+enter_bash:
+	docker exec -it $(CONTAINER_NAME) /bin/bash
+
+stop_bash:
+	-test "$(shell docker container inspect -f '{{.State.Running}}' $(CONTAINER_NAME) 2> /dev/null)" = "true" && docker stop $(CONTAINER_NAME)
+
+clean: stop_bash
+	-docker container inspect $(CONTAINER_NAME) > /dev/null 2>&1 && docker rm $(CONTAINER_NAME)
+	-sudo rm -fr $(OUTPUT_DIR)
+
+cleanall: clean
+	-docker inspect --type=image $(IMAGE_NAME) > /dev/null 2>&1 && docker image rm $(IMAGE_NAME)