[chore] Add nightly mirror to Codeberg.org (#392)

* add mirror pipeline => codeberg

* remove trigger in mirror step

* fix file formatting

.drone.yml

@@ -4,7 +4,6 @@
 ###
 ### For documentation on drone, see: https://docs.drone.io/
 ### For documentation on drone docker pipelines in particular: https://docs.drone.io/pipeline/docker/overview/
-
 kind: pipeline
 type: docker
 name: default
@@ -111,8 +110,37 @@ trigger:
     - NyaaaWhatsUpDoc/gotosocial
     - f0x52/gotosocial
 
+---
+kind: pipeline
+type: docker
+name: cron
+
+trigger:
+  event:
+    - cron
+  cron:
+    - nightly
+
+clone:
+  disable: true
+
+steps:
+  - name: mirror
+    image: alpine/git
+    environment:
+      CODEBERG_TOKEN:
+        from_secret: gts_codeberg_token
+    commands:
+      # configure git credentials
+      - git config --global user.email "admin@gotosocial.org"
+      - git config credential.helper store
+      - printf "https://gotosocialbot:${CODEBERG_TOKEN}@codeberg.org\n" >> ~/.git-credentials
+      # mirror and push
+      - git clone --mirror https://github.com/superseriousbusiness/gotosocial .
+      - git push --mirror https://codeberg.org/superseriousbusiness/gotosocial
+
 ---
 kind: signature
-hmac: f6372893445074c19e33057cf2cb94ddc9b5c54108094f9bfd40aae7c501f87c
+hmac: 56eb9e0f41199d44f2fc76b6d8265b9c4841ec2f5724852e7c116170d823d5a4
 
 ...