Update workflows and Docker image references

- Modify `.gitattributes` to use "ours" merge strategy for specific workflow and Docker Compose files.
- Update `nightly.yml` to allow manual triggering and set permissions for content writing.
- Change Docker image reference for `minecraft-lce-dedicated-server` service to a new source.

.gitattributes

@@ -0,0 +1,3 @@
+.github/workflows/docker-nightly.yml merge=ours
+.github/workflows/nightly.yml merge=ours
+docker-compose.dedicated-server.ghcr.yml merge=ours

.github/workflows/nightly.yml

@@ -1,15 +1,7 @@
 name: Nightly Releases
 
 on:
-  workflow_dispatch: 
+  workflow_dispatch:
-  push:
-    branches:
-    - 'main'
-    - 'feature/dedicated-server'
-    paths-ignore:
-      - '.gitignore'
-      - '*.md'
-      - '.github/*.md'
 
 permissions:
   contents: write

docker-compose.dedicated-server.ghcr.yml

@@ -1,6 +1,6 @@
 services:
   minecraft-lce-dedicated-server:
-    image: ghcr.io/kuwacom/minecraft-lce-dedicated-server:nightly
+    image: ghcr.io/itsrevela/minecraft-lce-dedicated-server:nightly
     container_name: minecraft-lce-dedicated-server
     restart: unless-stopped
     tty: true