Add "docs" target to root makefile

.gitlab-ci.yml

@@ -28,7 +28,7 @@ build:docs:
     - apk add --no-cache make
     - make ci-install-alpine-requirements
     - pip install -r requirements/docs.txt
-    - cd docs && make
+    - make docs
   artifacts:
     paths:
       - docs/_build/html

Makefile

@@ -1,9 +1,13 @@
 .DEFAULT_GOAL := help
+.PHONY: docs
 SRC_DIRS = ./tutor ./tests ./bin
 BLACK_OPTS = --exclude templates ${SRC_DIRS}
 
 ###### Development
 
+docs: ## Build html documentation
+	$(MAKE) -C docs
+
 compile-requirements: ## Compile requirements files
 	pip-compile -o requirements/base.txt requirements/base.in
 	pip-compile -o requirements/dev.txt requirements/dev.in