Hopefully fixed ci error

.woodpecker.yml

@@ -35,5 +35,6 @@ pipeline:
     lint:
         image: python:3.6-alpine
         commands:
+            - apk update && apk add --no-cache build-base
             - pip install -e .[ci]
             - tox -e lint

Makefile

@@ -1,13 +1,13 @@
 # =====CONFIG=====
 # Devop environment runs in 3.8
 # TODO switch this to python3.6
-PYTHON=python3.9
+PYTHON=python3.6
 
 
 # =====RECIPES=====
 .venv/bin/activate: setup.py
 	'$(PYTHON)' -m venv .venv
-	.venv/bin/pip install -e .[dev]
+	.venv/bin/pip install -e .[dev] -e .[ci]
 
 venv: .venv/bin/activate
 .PHONY: venv

setup.py

@@ -8,14 +8,14 @@ setup(
     # TODO add license
     packages=["app", "tests"],
     extras_require={
+        # A developer needs both
+        "ci": [
+            "tox==3.21.1",
+        ],
         "dev": [
             "jedi==0.18.0",
             "black==20.8b1",
             "flake8==3.8.4",
-            "tox==3.21.1",
-        ],
-        "ci": [
-            "tox==3.21.1",
         ],
     },
 )