feat(ci): add deployment guides and docker-compose configurations

Add docker-compose files for CasaOS and Dokploy deployment scenarios,
update README with deployment instructions, and add 'latest' tag support
to the docker-build workflow.

.github/workflows/docker-build.yml

@@ -49,6 +49,7 @@ jobs:
             type=ref,event=branch
             type=semver,pattern={{version}}
             type=sha
+            type=raw,value=latest,enable={{is_default_branch}}
 
       - name: Build and push image
         uses: docker/build-push-action@v6