Added (hopefully) complete tox config

.woodpecker.yml

@@ -1,8 +1,35 @@
 pipeline:
     # TODO add config for all other versions
-    text-3.9-current:
+    test-3.9:
-        image: python:3.9
+        image: python:3.9-alpine
         pull: true
         commands:
             - pip install -e .[dev]
             - tox -e py39
+
+    test-3.8:
+        image: python:3.8-alpine
+        pull: true
+        commands:
+            - pip install -e .[dev]
+            - tox -e py38
+
+    test-3.7:
+        image: python:3.7-alpine
+        pull: true
+        commands:
+            - pip install -e .[dev]
+            - tox -e py37
+
+    test-3.6:
+        image: python:3.6-alpine
+        pull: true
+        commands:
+            - pip install -e .[dev]
+            - tox -e py36
+
+    lint:
+        image: python:3.6-alpine
+        commands:
+            - pip install -e .[dev]
+            - tox -e lint

Makefile

@@ -39,3 +39,7 @@ install: app
 test: venv tox.ini
 	@ .venv/bin/tox
 .PHONY: test
+
+lint: venv
+	@ .venv/bin/tox -e lint
+.PHONY: lint

tests/test_succeed.py

@@ -0,0 +1,2 @@
+def test_succeed():
+    pass

tox.ini

@@ -1,7 +1,14 @@
 [tox]
-envlist = py36,py37,py38,py39
+envlist = py36,py37,py38,py39,lint
 
 [testenv]
 deps = pytest
 commands =
     pytest
+
+[testenv:lint]
+basepython = python3.6
+deps = black==20.8b1
+       flake8==3.8.4
+commands = black --check setup.py app
+           flake8 setup.py app