Les fichiers .zip de Nginx renvoient 404

J'ai configuré Nginx comme proxy inverse pour Node et pour servir mes fichiers statiques et les images téléchargées par les utilisateurs.

Tout fonctionne à merveille sauf que je ne comprends pas pourquoi Nginx ne trouve pas mes fichiers .zip. Voici mon nginx.conf.

    user nginx;
    worker_processes 1;

    error_log  /var/log/nginx/error.log warn;
    pid        /var/run/nginx.pid;

    events {
   worker_connections 1024;
    }

    http {

include mime.types;
proxy_cache_path /var/www/web_cache levels=1:2 keys_zone=ooparoopaweb_cache:8m     max_size=1000m inactive=600m;

sendfile on;

upstream *******_node {
    server 172.27.198.66:8888 max_fails=3 fail_timeout=20s;
    #fair weight_mode=idle no_rr
}

upstream ******_json_node {
    server 172.27.176.57:3300 max_fails=3 fail_timeout=20s;
}

server { #REDIRECT ALL HTTP REQUESTS FOR FRONT-END SITE TO HTTPS
    listen 80;
    server_name *******.com www.******.com;

    return 301 https://$host$request_uri;

}

server { #MOBILE APPLICATION PROXY TO NODE JSON
    listen 3300 ssl;
    ssl_certificate /*****/*******/json_ssl/server.crt;
    ssl_certificate_key /*****/******/json_ssl/server.key;

    server_name json.*******.com;

    location / {    
        proxy_pass http://******_json_node;
        proxy_redirect off;
        proxy_set_header Host $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 https;
        client_max_body_size 20m;
        client_body_buffer_size 128k;
        proxy_connect_timeout 90s;
        proxy_send_timeout 90s;
        proxy_read_timeout 90s;
        proxy_buffers 32 4k;
    }
}

server { #******.COM FRONT-END SITE PROXY TO NODE WEB SERVER
    listen 443 ssl;
    ssl_certificate /***/***/web_ssl/********.crt;
    ssl_certificate_key /****/*****/web_ssl/myserver.key;

    server_name mydomain.com www.mydomain.com;

    add_header Strict-Transport-Security max-age=500;

    location / {
        gzip on;
        gzip_types text/html text/css application/json application/x-javascript;
        proxy_pass http://mydomain_node;
        proxy_redirect off;
        proxy_set_header Host $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 https;
        client_max_body_size 20m;
        client_body_buffer_size 128k;
        proxy_connect_timeout 90s;
        proxy_send_timeout 90s;
        proxy_read_timeout 90s;
        proxy_buffers 32 4k;
    }
}

server { #ADMIN SITE PROXY TO NODE BACK-END
    listen 80;

    server_name admin.mydomain.com;

    location / {
        proxy_pass http://mydomain_node;
        proxy_redirect off;
        proxy_set_header Host $host ; 
        proxy_set_header X-Real-IP $remote_addr ; 
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for ;
        client_max_body_size 20m;
        client_body_buffer_size 128k;
        proxy_connect_timeout 90s;
        proxy_send_timeout 90s;
        proxy_read_timeout 90s;
        proxy_buffers 32 4k;
    }
}

server { # SERVES STATIC FILES

    listen 80;
    listen 443 ssl;

    ssl_certificate /**/*****/server.crt;
    ssl_certificate_key /****/******/server.key;

    server_name static.domain.com;
    access_log static.domain.access.log;

    root /var/www/mystatic/;

    location ~*\.(jpeg|jpg|png|ico)$ {

        gzip  on;
        gzip_types text/plain text/css application/json application/x-javascript text/xml
        application/xml application/rss+xml text/javascript image/svg+xml
        application/vnd.ms-fontobject application/x-font-ttf font/opentype image/png image/jpeg
        application/zip;
        expires 10d;
        add_header Cache-Control public;

    }

    location ~*\.zip {
        #internal;
        add_header Content-Type "application/zip";
        add_header Content-Disposition "attachment; filename=gamezip.zip";
    }
}
}

include tcp.conf;

Tcp.conf contient des paramètres qui permettent à Nginx d'utiliser le proxy pour les websockets. Je ne pense pas que ce qu'il contient soit pertinent pour cette question. Je voudrais également ajouter que je veux que les fichiers zip soient un téléchargement forcé.