Nginx Not Recognizing Folder Files?

Question

I am working on a Web system and using the Docker with Nginx. Nginx is not recognizing the images that compose the system nor the files that compose the Bootstrap.

Below is the default file for Nginx:

server {
listen 80;

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

server_name 192.168.0.18;

location / {
    try_files $uri /index.php$is_args$args;
}

location ~ \.php$ {
    fastcgi_split_path_info ^(.+\.php)(/.+)$;
    fastcgi_pass phpfpm:9000;
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    include fastcgi_params;
   }
}