Add CI

.drone.yml

@@ -0,0 +1,22 @@
+---
+kind: pipeline
+type: docker
+name: build and publish
+
+steps:
+  - name: build
+    image: registry.kucharczyk.tech/python-pypi
+    commands:
+      - python -m build
+  - name: publish
+    image: registry.kucharczyk.tech/python-pypi
+    commands:
+      - python -m twine upload -u $USERNAME -p $PASSWORD dist/*
+    environment:
+      USERNAME:
+        from_secret: pypi_username
+      PASSWORD:
+        from_secret: pypi_password
+trigger:
+  event:
+    - tag