Fix linter warnings and CI timeout

Author: Demiserular

.github/workflows/ci.yml

@@ -54,6 +54,7 @@ jobs:
               uses: golangci/golangci-lint-action@v4
               with:
                   version: latest
+                  args: --timeout=5m
 
     docker:
         runs-on: ubuntu-latest

cmd/server/main.go

@@ -25,7 +25,9 @@ func main() {
 
 	// Initialize logger
 	logger := initLogger(cfg.LogLevel)
-	defer logger.Sync()
+	defer func() {
+		_ = logger.Sync() // Ignore sync error on stdout/stderr
+	}()
 
 	logger.Info("starting minipaas server",
 		zap.String("port", cfg.ServerPort),