Virtualmin Apache reverse proxy vhost configuration for a React app, redirected to https by default

react_app.apache.conf

<VirtualHost *:80>
SuexecUserGroup "#1000" "#1000"
ServerName app.domain.com
ServerAlias www.app.domain.be
DocumentRoot /home/domain/public_html
ErrorLog /var/log/virtualmin/app.domain.com_error_log
CustomLog /var/log/virtualmin/app.domain.com_access_log combined
DirectoryIndex index.html index.htm
# Various rewrite rules.
<IfModule mod_rewrite.c>
  RewriteEngine on

  # Set "protossl" to "s" if we were accessed via https://.  This is used later
  # if you enable "www." stripping or enforcement, in order to ensure that
  # you don't bounce between http and https.
  RewriteRule ^ - [E=protossl]
  RewriteCond %{HTTPS} on
  RewriteRule ^ - [E=protossl:s]

  # Make sure Authorization HTTP header is available to PHP
  # even when running as CGI or FastCGI.
  RewriteRule ^ - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]

  # Rewrite to HTTPS by default
  RewriteCond %{HTTPS} off
  RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

  # Rules to correctly serve gzip compressed CSS and JS files.
  # Requires both mod_rewrite and mod_headers to be enabled.
  <IfModule mod_headers.c>
    # Serve gzip compressed CSS files if they exist and the client accepts gzip.
    RewriteCond %{HTTP:Accept-encoding} gzip
    RewriteCond %{REQUEST_FILENAME}\.gz -s
    RewriteRule ^(.*)\.css $1\.css\.gz [QSA]

    # Serve gzip compressed JS files if they exist and the client accepts gzip.
    RewriteCond %{HTTP:Accept-encoding} gzip
    RewriteCond %{REQUEST_FILENAME}\.gz -s
    RewriteRule ^(.*)\.js $1\.js\.gz [QSA]

    # Serve correct content types, and prevent mod_deflate double gzip.
    RewriteRule \.css\.gz$ - [T=text/css,E=no-gzip:1]
    RewriteRule \.js\.gz$ - [T=text/javascript,E=no-gzip:1]

    <FilesMatch "(\.js\.gz|\.css\.gz)$">
      # Serve correct encoding type.
      Header set Content-Encoding gzip
      # Force proxies to cache gzipped & non-gzipped css/js files separately.
      Header append Vary Accept-Encoding
    </FilesMatch>
  </IfModule>
</IfModule>
<Proxy *>
  Order deny,allow
  Allow from all
</Proxy>
ProxyPreserveHost On
ProxyRequests off
ProxyPass / http://localhost:3000/
ProxyPassReverse / localhost:3000/
</VirtualHost>
<VirtualHost 123.456.79.10:443>
SuexecUserGroup "#1000" "#1000"
ServerName app.domain.com
ServerAlias www.app.domain.be
DocumentRoot /home/domain/public_html
ErrorLog /var/log/virtualmin/app.domain.com_error_log
CustomLog /var/log/virtualmin/app.domain.com_access_log combined
DirectoryIndex index.html index.htm
ProxyPreserveHost On
ProxyRequests off
ProxyPass / http://localhost:3000/
ProxyPassReverse / localhost:3000/
SSLEngine on
SSLCertificateFile /home/domain/ssl.cert
SSLCertificateKeyFile /home/domain/ssl.key
SSLProtocol all -SSLv2 -SSLv3 -TLSv1 -TLSv1.1
</VirtualHost>