Deploying Twake on a server with existing reverse proxy

Hello, I am trying to install Twake on a server that already has a system that handles reverse proxy as well as ability to issue Letsencrypt, how can i ommit the existing Nginx defaulted, and make use of the one provided by my server?

here is another script that was used to install postalserver. io on the same server
based on this instructions

Installation - Postal Documentation (postalserver.io)

#!/usr/bin/env bash

echo "Hello, Lets install some prerequisites (git, curl, jq and docker-compose)."
sleep 0.2s
echo -e

yum -y install git curl jq nethserver-firewall-base-ui nethserver-docker php-pecl-memcached php-imap php-mysql php-mcrypt php-pecl-redis php-pecl-apcu php-smbclient php-ldap php-mbstring
wait
echo -e
echo "now lets open up the necessary firewall ports"
echo -e

config set rabbitmq service status enabled TCPPorts 5672 UDPPorts 5672 access red,green

config set postalweb service status enabled TCPPorts 5000 UDPPorts 5000 access red,green

config set dnspostal service status enabled UDPPorts 53 access red,green

config set smtps service status enabled TCPPorts 465 UDPPorts 465 access red,green ##change to port you want if it conflicts

config set imap service status enabled TCPPorts 143 UDPPorts 143 access red,green ##change to port you want if it conflicts

config set imaps service status enabled TCPPorts 993 UDPPorts 993 access red,green ##change to port you want if it conflicts

config set postal-mariadb service status enabled TCPPorts 3307 UDPPorts 3307 access red,green

signal-event firewall-adjust

wait

echo -e
echo "Ok Done."
echo -e
sleep 0.2s

echo -e
echo "Please wait while I build docker-compose from source."
echo -e
sleep 0.2s

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

wait

echo -e
echo "Ok Done."
echo -e
sleep 0.2s

echo -e
echo "Now I'll setup the helper repository."
sleep 0.2s
echo -e

git clone https://postalserver.io/start/install /opt/postal/install
sudo ln -s /opt/postal/install/bin/postal /usr/bin/postal

wait

echo "<VirtualHost *:443>
    ServerName postal.$domain
    RewriteEngine On
    SSLEngine On
    ProxyPassMatch ^/.well-known/acme-challenge/ !
    RequestHeader set X-Forwarded-Proto "https"
    ProxyPass / http://172.17.0.1:5000/
    ProxyPassReverse / http://172.17.0.1:5000/
    ProxyPreserveHost On
    ProxyErrorOverride Off
</VirtualHost>

<VirtualHost *:80>
    ServerName postal.$domain
    RewriteEngine On
    ProxyPassMatch ^/.well-known/acme-challenge/ !
    RewriteCond %{HTTPS} !=on
    RewriteRule (.*) https://%{SERVER_NAME}$1 [R,L]
</VirtualHost>" > /etc/httpd/conf.d/postal.conf

systemctl restart httpd
echo -e
echo "Ok Done."
echo -e
sleep 0.2s

head /dev/urandom | tr -dc A-Za-z0-9 | head -c10 >> ~/pass.txt

echo -e
echo "Thank you now I'll install the rabbitmq instance on docker."
echo -e
sleep 0.2s

docker run -d \
   --name postal-rabbitmq \
   -p 127.0.0.1:5672:5672 \
   --restart always \
   -e RABBITMQ_DEFAULT_USER=postal \
   -e RABBITMQ_DEFAULT_PASS=$(cat ~/pass.txt) \
   -e RABBITMQ_DEFAULT_VHOST=postal \
   rabbitmq:3.8

wait

echo -e
echo "Thank you please wait while I create your database and credentials this may take a moment"
echo -e
sleep 0.2s

docker run -d \
   --name postal-mariadb \
   -p 127.0.0.1:3307:3306 \
   --restart always \
   -e MARIADB_DATABASE=postal \
   -e MARIADB_ROOT_PASSWORD=$(cat ~/pass.txt) \
   mariadb

wait
echo -e
echo "Ok Done."
echo -e
sleep 0.2s

echo -e
echo  "What is your domain?"
echo -e
read -r domain
sleep 0.2s

postal bootstrap postal.$domain

wait

echo -e
echo "Thank you please wait while I initialize your postal this may take a moment"
echo -e
sleep 0.2s

sed -i '4s/  reverse_proxy .*/  reverse_proxy 172.17.0.1:5000/' /opt/postal/config/Caddyfile;
sed -i '3s/  use_ip_pools: .*/  use_ip_pools: true/' /opt/postal/config/postal.yml;
sed -i '13s/  bind_address: .*/  bind_address: 172.17.0.1/' /opt/postal/config/postal.yml;
sed -i '18s/  port: .*/  port: 465/' /opt/postal/config/postal.yml;
sed -i "41s/host: .*/host: $(docker inspect -f '{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' `docker ps -aqf "name=postal-rabbitmq"`)/g" /opt/postal/config/postal.yml;
sed -i "26s/host: .*/host: $(docker inspect -f '{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' `docker ps -aqf "name=postal-mariadb"`)/g" /opt/postal/config/postal.yml;
sed -i '52s/smtp_server_hostname: .*/smtp_server_hostname: '"postal.$domain"'/g' /opt/postal/config/postal.yml;
sed -i "34s/host: .*/host: $(docker inspect -f '{{range.NetworkSettings.Networks}}{{.IPAddress}}{{end}}' `docker ps -aqf "name=postal-mariadb"`)/g" /opt/postal/config/postal.yml;
sed -i '56s/track_domain: .*/track_domain: '"track.postal.$domain"'/g' /opt/postal/config/postal.yml;
sed -i '55s/route_domain: .*/route_domain: '"routes.postal.$domain"'/g' /opt/postal/config/postal.yml;
sed -i '54s/return_path: .*/return_path: '"return.postal.$domain"'/g' /opt/postal/config/postal.yml;
sed -i '53s/spf_include: .*/spf_include: '"spf.postal.$domain"'/g' /opt/postal/config/postal.yml;
sed -i '51s/  - .*/  - '"postal.$domain"'/g' /opt/postal/config/postal.yml;
sed -i "43s/password: .*/password: $(cat ~/pass.txt)/g" /opt/postal/config/postal.yml;
sed -i "28s/password: .*/password: $(cat ~/pass.txt)/g" /opt/postal/config/postal.yml;
sed -i "36s/password: .*/password: $(cat ~/pass.txt)/g" /opt/postal/config/postal.yml;



postal initialize

wait

postal make-user

wait

echo -e
echo "Database setup, initialised and user setup successfully please wait while I start Postal"
echo -e
sleep 0.2s

postal start

wait


echo -e
echo "Ok Done."
echo -e
sleep 0.2s

echo -e
echo "Now I'll create a script to clean and automate the start of Postal on reboot"
echo -e
sleep 0.2s

echo "#!/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
LD_LIBRARY_PATH=/usr/local/lib
/usr/bin/postal status | grep Exit && date >> ~/logpostal.log
/usr/bin/postal status | grep Exit && /usr/bin/postal start" > ~/postalCheck.sh

echo -e
echo "Ok Done, now lets make the script executable."
echo -e
sleep 0.2s

chmod +x ~/postalCheck.sh

echo -e
echo "Ok Done, now I'll add it to crontab."
echo -e
sleep 0.2s

echo "@reboot sleep 60 && ~/postalCheck.sh" >> /etc/crontab

echo -e
echo "Ok Done."
echo -e
sleep 0.2s



echo -e
echo "Thank you for your patience, please open a web browser to https://postal.$domain"
echo "Please take note of your mariadb and rabbitmq passwd $(cat pass.txt) and press enter so it can be deleted for security"
wait
echo "the password file will now be deleted"
rm -f ~/pass.txt

here is the Docker docs of the servr Docker — NethServer 7 Final

the scale installation is the one i would like to use.