diff --git a/Dockerfile b/Dockerfile
index 74d41df..c040309 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -28,7 +28,7 @@ FROM scratch
 
 # Copy CA certificates and timezone data
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
-COPY --from=builder /usr/share/zoneinfo/Asia/Shanghai /usr/share/zoneinfo/Asia/Shanghai
+COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
 
 ENV TZ=Asia/Shanghai
 
diff --git a/ppanel.go b/ppanel.go
index 7fb787d..47d2c0c 100644
--- a/ppanel.go
+++ b/ppanel.go
@@ -8,12 +8,13 @@ import (
 
 func init() {
 	// Ensure time.Local matches DSN loc=Asia/Shanghai.
-	// In scratch Docker images, Go defaults to UTC even with TZ set,
-	// causing time range queries to shift by 8 hours.
+	// In scratch Docker images, LoadLocation may fail due to missing zoneinfo,
+	// so fall back to FixedZone as a guaranteed alternative.
 	loc, err := time.LoadLocation("Asia/Shanghai")
-	if err == nil {
-		time.Local = loc
+	if err != nil {
+		loc = time.FixedZone("CST", 8*3600)
 	}
+	time.Local = loc
 }
 
 func main() {