fix: 前端自动化部署优化

Dockerfile.frontend

@@ -22,8 +22,9 @@ FROM nginx:alpine
 # Copy built assets
 COPY --from=builder /app/dist /usr/share/nginx/html
 
-# Copy custom nginx configuration
-COPY nginx.conf /etc/nginx/conf.d/default.conf
+# Copy nginx configuration template and entrypoint to render from env
+COPY nginx.conf /etc/nginx/conf.d/default.conf.template
+COPY frontend/entrypoint/10-envsubst.sh /docker-entrypoint.d/10-envsubst.sh
 
 # Create log directory
 RUN mkdir -p /var/log/nginx

docker-compose.prod.yml

@@ -87,6 +87,8 @@ services:
     restart: unless-stopped
     environment:
       - TZ=Asia/Shanghai
+      # Set API upstream for automated deployments (e.g., external gateway or backend host)
+      - API_UPSTREAM=${API_UPSTREAM:-http://backend:18888}
     ports:
       - "${FRONTEND_PORT:-80}:80"
     depends_on:

docker-compose.yml

@@ -68,6 +68,7 @@ services:
     restart: unless-stopped
     environment:
       - TZ=Asia/Shanghai
+      - API_UPSTREAM=http://backend:18888
     ports:
       - "18080:80"
     depends_on:

frontend/entrypoint/10-envsubst.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+set -eu
+
+# Default upstream if not provided (docker compose dev network)
+: "${API_UPSTREAM:=http://backend:18888}"
+
+TEMPLATE="/etc/nginx/conf.d/default.conf.template"
+TARGET="/etc/nginx/conf.d/default.conf"
+
+if [ -f "$TEMPLATE" ]; then
+  echo "[entrypoint] Rendering nginx config with API_UPSTREAM=$API_UPSTREAM"
+  envsubst '\$API_UPSTREAM' < "$TEMPLATE" > "$TARGET"
+fi
+
+exit 0
+
+
+

nginx.conf

@@ -39,10 +39,9 @@ server {
         access_log off;
     }
 
-    # API proxy to backend (container network)
+    # API proxy to backend (configurable via $API_UPSTREAM)
     location /api/ {
-        # Keep original request path; backend service name resolves inside Docker network
-        proxy_pass http://backend:18888;
+        proxy_pass $API_UPSTREAM;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;