Update docker-publish.yml

Author: dgibbs64

.github/workflows/docker-publish.yml

@@ -4,6 +4,8 @@ on:
   push:
     branches:
       - 'main'
+  schedule:
+    - cron:  '0 0 * * *'
 
 jobs:
   docker:
@@ -40,4 +42,4 @@ jobs:
           push: true
           tags: |
             gameservermanagers/linuxgsm-docker:latest
-            ghcr.io/gameservermanagers/linuxgsm-docker:latest
+            ghcr.io/gameservermanagers/linuxgsm-docker:latest