こちらの方が便利かも25 Let's Encrypt リバースプロキシ

この設定で下記のように表示されます。
hogehoge.com → reverse.com
hogehoge2.com → reverse2.com
hogehoge3.com → reverse3.com

version: '3.3'

services:
  nginx-proxy:
    image: jwilder/nginx-proxy
    labels:
      - com.github.jrcs.letsencrypt_nginx_proxy_companion.nginx_proxy=true
    ports:
# nesessary port 80 for Let's Encrypt
      - 80:80
      - 443:443
    volumes:
      - vhost:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
      - /var/run/docker.sock:/tmp/docker.sock:ro
      - ./certs:/etc/nginx/certs:ro
      - ./nginx-proxy/custom.conf:/etc/nginx/conf.d/custom.conf:ro
    restart: always

  letsencrypt:
    image: jrcs/letsencrypt-nginx-proxy-companion
    volumes:
      - vhost:/etc/nginx/vhost.d
      - html:/usr/share/nginx/html
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - ./certs:/etc/nginx/certs:rw
    restart: always
    network_mode: host

  bridge-1:
    image: nginx:latest
    volumes:
      - ./bridge-1/default.conf:/etc/nginx/conf.d/default.conf
      - ./bridge-1:/var/www/html
    environment:
      - VIRTUAL_PORT=80
      - VIRTUAL_HOST=hogehoge.com, hogehoge2.com, hogehoge3.com
      - LETSENCRYPT_HOST=hogehoge.com, hogehoge2.com, hogehoge3.com
      - LETSENCRYPT_EMAIL=info@kumolabo.com
    restart: always

volumes:
  vhost:
  html:

mkdir ./nginx-proxy/
touch ./nginx-proxy/custom.conf
mkdir ./bridge-1/

./bridge-1/default.conf

server {
    listen 80;
    server_name hogehoge.com;
    location / {
	proxy_request_buffering off;
        proxy_pass http://reverse.com/;
        proxy_redirect off;
        proxy_set_header Host            $http_host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}
server {
    listen 80;
    server_name hogehoge2.com;
    location / {
	proxy_request_buffering off;
        proxy_pass http://reverse2.com/;
        proxy_redirect off;
        proxy_set_header Host            $http_host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}
server {
    listen 80;
    server_name hogehoge3.com;
    location / {
	proxy_request_buffering off;
        proxy_pass http://reverse3.com/;
        proxy_redirect off;
        proxy_set_header Host            $http_host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}

下記２つのファイルにclient_max_body_sizeを追加する。

echo 'client_max_body_size 1g;' >> ./nginx-proxy/custom.conf

vi ./bridge-1/default.conf
client_max_body_size 1g;
server {
    listen 80;
    server_name hogehoge.com;
    location / {
	proxy_request_buffering off;
        proxy_pass http://reverse.com/;
        proxy_redirect off;
        proxy_set_header Host            $http_host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}