Using a prefix for strapi routes

then update nginx.conf file

http {
upstream strapi {
    server 127.0.0.1:1337;
}
#tcp_nopush     on;

#keepalive_timeout  0;
keepalive_timeout  65;

#gzip  on;

server {
    listen       8888;
    server_name  localhost;


    location / {
        root C:/projects/bh-service-catalog-svc;
    }
    location /service-catalog/ {
        rewrite ^/service-catalog/(.*) /$1  break;
        proxy_pass http://strapi;
        proxy_http_version 1.1;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        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_set_header Host $http_host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_pass_request_headers on;
    }
    location /service-catalog/assets/ {
        rewrite /service-catalog/(.*) /$1  break;
        proxy_pass http://strapi/assets;
        proxy_http_version 1.1;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        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_set_header Host $http_host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_pass_request_headers on;
    }
    location /dashboard {
        proxy_pass http://strapi/dashboard;
        proxy_http_version 1.1;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        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_set_header Host $http_host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_pass_request_headers on;
    }}


server.js
module.exports = ({ env }) => ({
  host: env('HOST', '0.0.0.0'),
  port: env.int('PORT', 1337),
  url: 'http://localhost:8888/service-catalog',
  admin: {
    url:'http://localhost:8888/dashboard',
    auth: {
      secret: env('ADMIN_JWT_SECRET', 'f8bbc8130154293e157e1e01ab09d62d'),
    },
  },
});

then delete build , .cache folder
then run npm run build
then run npm run develop