| 12345678910111213141516171819202122232425262728293031 | server {    listen 80;    server_name _;    location / {        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-For $remote_addr;        proxy_set_header Host $host;        proxy_http_version 1.1;        proxy_set_header Upgrade $http_upgrade;        proxy_set_header Connection "upgrade";        proxy_redirect off;        proxy_pass http://localhost:81;     }    location /backend {        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-For $remote_addr;        proxy_set_header Host $host;        proxy_http_version 1.1;        proxy_set_header Upgrade $http_upgrade;        proxy_set_header Connection "upgrade";        proxy_redirect off;        rewrite ^/backend/?(.*) /$1 break;        proxy_pass http://backend:8080;     }}
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