generate nginx config for HTTPS->HTTP frontend

#!/bin/bash
domain=domain.com
declare -A map
map[adm]=8021
map[web]=8022
map[cms]=8023

cp proxy{,.bak$(date +'%y%m%d.%H%M%S')} 2>/dev/null
: > proxy

for i in ${!map[@]}; do
    fqdn=$i.${domain}
    cat >> proxy <<EOF
server { # 127.0.0.1:${map[$i]}
    listen 443 ssl;
    server_name ${fqdn};
    ssl_certificate      cert/${fqdn}.crt;
    ssl_certificate_key  cert/${fqdn}.key;
    location / {
        proxy_pass http://127.0.0.1:${map[$i]};
        proxy_set_header Host \$host;
        proxy_set_header X-Real-IP \$remote_addr;
    }
}
server {
    listen 80;
    server_name ${fqdn};
    return 301 https://${fqdn}\$request_uri;
}
EOF
done