fix: 前端 nginx占位符问题

.gitignore

@@ -30,3 +30,5 @@ coverage/
 # 类型声明缓存
 *.tsbuildinfo
 *.iml
+
+.claude

gateway/Dockerfile

@@ -1,2 +1,6 @@
 FROM nginx:1.27-alpine
-COPY nginx.conf /etc/nginx/conf.d/default.conf
+COPY nginx.conf.template /etc/nginx/conf.d/default.conf.template
+COPY docker-entrypoint.sh /
+RUN chmod +x /docker-entrypoint.sh
+ENTRYPOINT ["/docker-entrypoint.sh"]
+CMD ["nginx", "-g", "daemon off;"]

gateway/docker-entrypoint.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+set -e
+
+# 默认值：测试环境用 docker-compose 内的 service name
+BACKEND_HOST=${BACKEND_HOST:-backend}
+
+echo "[nginx] BACKEND_HOST=${BACKEND_HOST}"
+
+envsubst '${BACKEND_HOST}' < /etc/nginx/conf.d/default.conf.template > /etc/nginx/conf.d/default.conf
+
+exec "$@"

gateway/nginx.conf → gateway/nginx.conf.template

@@ -6,7 +6,7 @@ server {
 
     # 后端 API 代理
     location /api/ {
-        proxy_pass http://qqflow-backend-test:8080/;
+        proxy_pass http://${BACKEND_HOST}:8080/;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
@@ -15,7 +15,7 @@ server {
 
     # 文件上传/下载代理
     location /uploads/ {
-        proxy_pass http://qqflow-backend-test:8080/uploads/;
+        proxy_pass http://${BACKEND_HOST}:8080/uploads/;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;