部署：增加 docker-compose 与容器 nginx 配置，支持 docker 部署

deploy/nginx/docker-chat.conf

@@ -0,0 +1,25 @@
+server {
+  listen 8443;
+  server_name _;
+
+  root /usr/share/nginx/html;
+  index index.html;
+
+  location /api/ {
+    proxy_pass http://backend:4000/;
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection 'upgrade';
+    proxy_set_header Host $host;
+    proxy_cache_bypass $http_upgrade;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+    proxy_buffering off;
+    chunked_transfer_encoding off;
+  }
+
+  location / {
+    try_files $uri $uri/ /index.html;
+  }
+}