Fix Makefile to use tox for docs (#752)

* Fix Makefile to use tox for docs

* Resolve `open` based upon operating system

Co-authored-by: Abhinav Singh <[email protected]>

Author: webknjaz

.gitignore

@@ -28,4 +28,3 @@ dist
 build
 
 proxy/public
-docs/_build

Makefile

@@ -14,6 +14,12 @@ CA_KEY_FILE_PATH := ca-key.pem
 CA_CERT_FILE_PATH := ca-cert.pem
 CA_SIGNING_KEY_FILE_PATH := ca-signing-key.pem
 
+OPEN=$(shell which open)
+UNAME := $(shell uname)
+ifeq ($(UNAME), Linux)
+OPEN=$(shell which xdg-open)
+endif
+
 .PHONY: all https-certificates sign-https-certificates ca-certificates
 .PHONY: lib-check lib-clean lib-test lib-package lib-coverage lib-lint lib-pytest
 .PHONY: lib-release-test lib-release lib-profile lib-doc
@@ -89,7 +95,6 @@ lib-dep:
 		-r requirements-testing.txt \
 		-r requirements-release.txt \
 		-r requirements-tunnel.txt \
-		-r docs/requirements.txt
 
 lib-lint:
 	python -m tox -e lint
@@ -115,18 +120,12 @@ lib-release: lib-package
 	twine upload dist/*
 
 lib-doc:
-	pushd docs && \
-	python -m sphinx \
-		--keep-going \
-		-b dirhtml \
-		-d _build/doctrees \
-		-D language=en . _build/html && \
-	popd && \
-	open docs/_build/html/index.html
+	python -m tox -e lint && \
+	$(OPEN) .tox/build-docs/docs_out/index.html
 
 lib-coverage:
 	pytest --cov=proxy --cov=tests --cov-report=html tests/
-	open htmlcov/index.html
+	$(OPEN) htmlcov/index.html
 
 lib-profile:
 	sudo py-spy record -o profile.svg -t -F -s -- python -m proxy