server {
    listen 80;
    listen [::]:80;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;

    gzip on;
    gzip_vary on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml;

    location = /oauth-client-metadata.json {
        default_type application/json;
        sub_filter_once off;
        sub_filter_types application/json;
        sub_filter '__FRONTEND_HOSTNAME__' $host;
        try_files /oauth-client-metadata.json =404;
    }

    location /assets/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }

    location = / {
        try_files /homepage.html /index.html;
    }

    location /app/ {
        try_files $uri $uri/ /index.html;
    }

    location / {
        try_files $uri $uri/ /index.html;
    }
}