Revert "Use a new image for poetry on drone"

This reverts commit d89ef58515.

.drone.yml

@@ -4,8 +4,9 @@ type: docker
 
 steps:
   - name: lint
-    image: fnndsc/python-poetry
+    image: python:3.8-slim
     commands:
+      - pip install poetry
       - poetry install
       - poetry run flake8 .
       - poetry run mypy .
@@ -22,8 +23,9 @@ steps:
         from_secret: docker_password
 
   - name: publish
-    image: fnndsc/python-poetry
+    image: python:3.8-slim
     commands:
+      - pip install poetry
       - poetry publish --build
     environment:
       POETRY_PYPI_TOKEN_PYPI:

renovate.json

@@ -1,3 +1,4 @@
 {
-  "$schema": "https://docs.renovatebot.com/renovate-schema.json"
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "ignorePaths": [".drone.yml"]
 }