CI: Update license & gitignore by cron

.drone.yml

@@ -433,6 +433,44 @@ steps:
       CROWDIN_KEY:
         from_secret: crowdin_key
 
+---
+kind: pipeline
+name: update_gitignore_and_licenses
+
+platform:
+  os: linux
+  arch: amd64
+
+workspace:
+  base: /go
+  path: src/code.gitea.io/gitea
+
+trigger:
+  branch:
+    - master
+  event:
+    - cron
+  cron:
+    - update_gitignore_and_licenses
+
+- name: download
+  image: golang:1.15
+  commands:
+    - timeout -s ABRT 40m make generate-license generate-gitignore
+
+- name: push
+  pull: always
+  image: appleboy/drone-git-push
+  settings:
+    author_email: "[email protected]"
+    author_name: GiteaBot
+    commit: true
+    commit_message: "[skip ci] Updated licenses and gitignores "
+    remote: "[email protected]:go-gitea/gitea.git"
+  environment:
+    GIT_PUSH_SSH_KEY:
+      from_secret: git_push_ssh_key
+
 ---
 kind: pipeline
 name: release-latest