fling/container/etc/nginx/conf.d/fling.conf

server {
    listen       3000;
    listen       [::]:3000;
    server_name  _;
    root         /var/www/fling;

    # config to enable HSTS(HTTP Strict Transport Security)
    add_header Strict-Transport-Security "max-age=15552000; includeSubdomains;";

    # forward /api requests to tomcat
    location /api {
        proxy_pass http://localhost:8080;

        proxy_set_header X-Forwarded-Host $host:$server_port;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Proto $scheme;

        # Required for web sockets to function
        proxy_http_version 1.1;
        proxy_buffering off;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";

        # Allow huge file uploads
        client_max_body_size 5G;
    }

    # handle openapi requests by openapi servlet
    location /v3/api-docs {
      proxy_pass http://localhost:8080;

      proxy_set_header X-Forwarded-Host $host:$server_port;
      proxy_set_header X-Forwarded-Server $host;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $host;
      proxy_set_header X-Forwarded-Proto $scheme;

      # Required for web sockets to function
      proxy_http_version 1.1;
      proxy_buffering off;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "upgrade";
    }

    # handle openapi requests by openapi servlet
    location /swagger-ui.html {
      proxy_pass http://localhost:8080;

      proxy_set_header X-Forwarded-Host $host:$server_port;
      proxy_set_header X-Forwarded-Server $host;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $host;
      proxy_set_header X-Forwarded-Proto $scheme;

      # Required for web sockets to function
      proxy_http_version 1.1;
      proxy_buffering off;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "upgrade";
    }

    # always respond with index.html for unknown paths
    # (routing is client side)
    location / {
        try_files $uri /index.html;
    }

    error_page 404 /404.html;
    location = /40x.html {
    }

    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
    }
}