diff --git a/Makefile b/Makefile
index b3cfb53..b71a03f 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,8 @@ dist: README.rst
 	python3 setup.py sdist bdist_wheel
 
 test: dist
-	docker build --no-cache -f tests/Dockerfile .
+	docker build --no-cache -f tests/Dockerfile -t gw2pvo-test .
+	docker image rm gw2pvo-test
 
 pypi: dist
 	python -m twine upload --repository gw2pvo dist/*