diff --git a/.drone.yml b/.drone.yml
index ecd6889..a0177de 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -3,6 +3,13 @@ kind: pipeline
 name: default
 
 steps:
+- name: pytest
+  image: python:3.6-alpine3.13
+  commands:
+    - wget -O- https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python3 -
+    - source $HOME/.poetry/env && poetry install
+    - source $HOME/.poetry/env && poetry run pytest
+
 - name: docker
   image: plugins/docker
   settings:
diff --git a/Dockerfile b/Dockerfile
index dd4db5d..5a33c84 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,6 @@ RUN set -ex; \
 COPY . /usr/src/kiwi_scp
 
 RUN set -ex; \
-    pip3 --use-feature=in-tree-build install /usr/src/kiwi_scp
+    pip3 --no-cache-dir --use-feature=in-tree-build install /usr/src/kiwi_scp
 
 ENTRYPOINT ["kiwi"]