feat: add renovate image

.drone.yml

@@ -49,3 +49,18 @@ steps:
     IMAGE_REPO: code.icb4dc0.de/prskr/ci-images/caddy
     IMAGE_TAG: latest
     BUILD_CONTEXT: caddy/
+
+- name: renovate
+  image: gcr.io/kaniko-project/executor:debug
+  network_mode: host
+  commands:
+    - >
+      echo "{\"auths\": {\"https://code.icb4dc0.de\": {\"auth\" : \"$(printf '%s:%s' $$GITEA_USER $$GITEA_TOKEN | base64)\" }}}" > /kaniko/.docker/config.json
+    - /kaniko/executor --destination "$${IMAGE_REPO}:$${IMAGE_TAG}" --context "$${BUILD_CONTEXT}"
+  environment:
+    GITEA_USER: prskr
+    GITEA_TOKEN:
+      from_secret: gitea_token
+    IMAGE_REPO: code.icb4dc0.de/prskr/ci-images/renovate
+    IMAGE_TAG: latest
+    BUILD_CONTEXT: renovate/

dind/Dockerfile

@@ -1,4 +0,0 @@
-FROM docker.io/docker:23-dind
-
-ENTRYPOINT [ "/usr/local/bin/dockerd" ]
-CMD [ "-H=tcp://127.0.0.1:2375" ]

renovate/Dockerfile

@@ -0,0 +1,4 @@
+FROM docker.io/node:lts-alpine
+
+RUN npm install -g renovate && \
+    curl -L https://go.dev/dl/go1.20.1.linux-amd64.tar.gz | tar -xvz -C /usr/local