Nginx caching proxy for conda

conda.conf

# /etc/nginx/conf.d/conda.conf
proxy_cache_path /var/cache/nginx/conda levels=2:2 keys_zone=conda:100m inactive=14d max_size=10g;

upstream conda.anaconda.org {
    server 104.17.92.24:443;
    server 104.17.93.24:443;
}

server {
    listen 80;
    server_name conda.anaconda.org conda-proxy;
    location / { 
        proxy_cache conda;
        proxy_cache_valid 200 365d;
        proxy_cache_key $request_uri;
        proxy_pass https://conda.anaconda.org;
        proxy_http_version 1.1;
        proxy_set_header Host "conda.anaconda.org";
        proxy_set_header Connection "";
        proxy_intercept_errors on;
        error_page 302 = @handle_redirect;
    }
    location @handle_redirect {
        proxy_cache conda;
        proxy_cache_valid 200 365d;
        set $saved_uri '$uri';
        proxy_cache_key $saved_uri;
        set $saved_redirect_location '$upstream_http_location';
        proxy_pass $saved_redirect_location;
        proxy_http_version 1.1;
        proxy_set_header Connection "";
        resolver 127.0.0.1;  // CHANGE IF THERE IS NO LOCAL DNS CACHE
    }
    location ~ .json$ { 
        proxy_pass https://conda.anaconda.org;
        proxy_cache_valid 200 1d;
        proxy_cache_key $request_uri;
        proxy_http_version 1.1;
        proxy_set_header Host "conda.anaconda.org";
        proxy_set_header Connection "";
    }
}

run.sh

echo 127.0.0.123 conda-proxy >> /etc/hosts
conda config --add channels http://conda-proxy/main
conda config --add channels http://conda-proxy/conda-forge