Proxy image with nginx

Proxy image with nginx

server {
        listen 80; 
        server_name domain.com;

        merge_slashes off;

        location ~ /(?<r>http://.*) {
            resolver 8.8.4.4 8.8.8.8 4.2.2.2 valid=3600s ipv6=off;
            proxy_set_header Referer ""; 
            proxy_pass $r; 
            expires 10y;
        }   

        location ~ /(?<r>https://.*) {
            resolver 8.8.4.4 8.8.8.8 4.2.2.2 valid=3600s ipv6=off;
            proxy_set_header Referer ""; 
            proxy_pass $r; 
            expires 10y;
        }   
}   

Proxy image with nginx cache

# https://www.nginx.com/blog/nginx-caching-guide/

proxy_cache_path /tmp/cache levels=1:2 keys_zone=my_cache:100m max_size=10g inactive=7d use_temp_path=off;

server {
        listen 80; 
        server_name domain.com;

        merge_slashes off;

        location ~ /(?<r>http://.*) {
            proxy_cache my_cache;
            resolver 8.8.4.4 8.8.8.8 4.2.2.2 valid=3600s ipv6=off;
            proxy_set_header Referer ""; 
            proxy_pass $r; 
            expires 10y;
        }   

        location ~ /(?<r>https://.*) {
            proxy_cache my_cache;
            resolver 8.8.4.4 8.8.8.8 4.2.2.2 valid=3600s ipv6=off;
            proxy_set_header Referer ""; 
            proxy_pass $r; 
            expires 10y;
        }   
}   

How can I use:

http://domain.com/https://img1.url.com/image.jpg