Make docker container accessible from apache only over subdomain

I have 2 docker containers (1x db and 1x node app) configured:

version: "3.7"
services:
  db:
    image: postgres:alpine
    command: -p 5435
    ports:
      - 127.0.0.1:5435:5435
    environment:
      POSTGRES_USER: ${DB_USER}
      POSTGRES_PASSWORD: ${DB_PASSWORD}
      PG_PORT: ${DB_PORT}
      POSTGRES_DB: ${DB_NAME}
    volumes:
      - pgdata:/var/lib/postgresql/nodeapp/data
    restart: always
    networks:
      - nodeapp-network
    container_name: nodeapp-db

  web:
    build:
      context: .
      dockerfile: Dockerfile
    depends_on:
      - db
    ports:
      - 13333:3333
    volumes:
      - webapp:/home/node/app
      - /home/node/app/node_modules
    env_file:
      - .env
    environment:
      NODE_ENV: prod
    networks:
      - nodeapp-network
    container_name: nodeapp-app
    hostname: nodeapp-app

volumes:
  pgdata:
  webapp:

networks:
  nodeapp-network:
    driver: bridge

The problem: if I make a request to https://mywebsite.com/13333 I get the exact same content as https://api.mywebsite.com/13333. I want to restrict it and make possible ONLY with subdomain.

My apache configuration is below:

httpd.conf:

ServerRoot "/etc/httpd"

Include conf.modules.d/*.conf

User apache
Group apache

ServerAdmin hi@mywebsite.com

ServerName www.mywebsite.com:80

<Directory />
    AllowOverride none
    Require all denied
</Directory>

DocumentRoot "/var/www/html"

<Directory "/var/www">
    AllowOverride None
    # Allow open access:
    Require all granted
</Directory>

<Directory "/var/www/html">
    Options Indexes FollowSymLinks
    AllowOverride None
    Require all granted
</Directory>

<IfModule dir_module>
    DirectoryIndex index.html
</IfModule>

<Files ".ht*">
    Require all denied
</Files>

ErrorLog "logs/error_log"

LogLevel warn

<IfModule log_config_module>
  
    LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
    LogFormat "%h %l %u %t \"%r\" %>s %b" common

    <IfModule logio_module>
      # You need to enable mod_logio.c to use %I and %O
      LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %I %O" combinedio
    </IfModule>

    CustomLog "logs/access_log" combined
</IfModule>

<IfModule alias_module>
    ScriptAlias /cgi-bin/ "/var/www/cgi-bin/"
</IfModule>

<Directory "/var/www/cgi-bin">
    AllowOverride None
    Options None
    Require all granted
</Directory>

<IfModule mime_module>
    TypesConfig /etc/mime.types

    AddType application/x-compress .Z
    AddType application/x-gzip .gz .tgz
    AddType text/html .shtml
    AddOutputFilter INCLUDES .shtml
</IfModule>

AddDefaultCharset UTF-8

<IfModule mime_magic_module>
    MIMEMagicFile conf/magic
</IfModule>

EnableSendfile on

# Load config files in the "/etc/httpd/conf.d" directory, if any.
Include conf.d/*.conf
Include sites-enabled/*.conf

mywebsite-ssl.conf

<IfModule mod_ssl.c>
<VirtualHost *:443>
    ServerName www.mywebsite.com
    ServerAlias mywebsite.com
    DocumentRoot /var/www/mywebsite.com/html
    ErrorLog /var/www/mywebsite.com/log/error.log
    CustomLog /var/www/mywebsite.com/log/requests.log combined
    Include /etc/letsencrypt/options-ssl-apache.conf
    SSLCertificateFile /etc/letsencrypt/live/mywebsite.com/cert.pem
    SSLCertificateKeyFile /etc/letsencrypt/live/mywebsite.com/privkey.pem
    SSLCertificateChainFile /etc/letsencrypt/live/mywebsite.com/chain.pem
</VirtualHost>
</IfModule>

mywebsite.conf

<VirtualHost *:80>
    ServerName www.mywebsite.com
    ServerAlias mywebsite.com
    DocumentRoot /var/www/mywebsite.com/html
    ErrorLog /var/www/mywebsite.com/log/error.log
    CustomLog /var/www/mywebsite.com/log/requests.log combined 

    RewriteEngine on
    RewriteCond %{SERVER_NAME} =mywebsite.com [OR]
    RewriteCond %{SERVER_NAME} =www.mywebsite.com    
    RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent]
</VirtualHost>

myapp.conf

<IfModule mod_ssl.c>
    <VirtualHost *:443>
        ServerName api.mywebsite.com
        <Proxy *>
            Allow from *
        </Proxy>
        ProxyPass / https://172.22.0.3:3333
    </VirtualHost>
</IfModule>

Already tried more solutions with redirecting but nothing worked.

Even deleting this mywebsite.conf the api continues to be served at domain and subdomain.

How I can solve this?

Thanks in advance!