location /api/ {
    # add_header 'Access-Control-Allow-Origin' '*';
    # add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
    # add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
    # add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
    proxy_pass http://backend/;
}

location /multystub/ {
    # add_header 'Access-Control-Allow-Origin' '*';
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
    add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
    add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
    proxy_pass http://multystub/;
}