add drone config

.drone.yml

@@ -0,0 +1,9 @@
+---
+kind: pipeline
+name: default
+
+steps:
+  - name: test
+    image: python3
+    commands:
+      - python3 test.py

test.py

@@ -0,0 +1,10 @@
+import unittest
+
+class BasicTest(unittest.TestCase):
+
+    def test_empty(self):
+        self.assertTrue(True)
+
+
+if __name__ == '__main__':
+    unittest.main()