الحصول على رسالة 'مرحبًا بك في nginx' دون الوصول إلى الإنترنت

I’m dealing with the same issue here.
Fresh install of ubuntu 24 lts
Bootstrap completes, then nginx default page.
When I ./discourse-doctor I get:

DISCOURSE DOCTOR Fri Apr 25 06:19:55 PM UTC 2025
OS: Linux talk 6.8.0-58-generic #60-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 14 18:29:48 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux


Found containers/app.yml

==================== YML SETTINGS ====================
DISCOURSE_HOSTNAME=talk.technospider.com
SMTP_ADDRESS=smtppro.zoho.com
DEVELOPER_EMAILS=REDACTED 
SMTP_PASSWORD=REDACTED 
SMTP_PORT=587
SMTP_USER_NAME=david@technospider.com
LETSENCRYPT_ACCOUNT_EMAIL=REDACTED 

==================== DOCKER INFO ====================
DOCKER VERSION: Docker version 26.1.3, build 26.1.3-0ubuntu1~24.04.1

DOCKER PROCESSES (docker ps -a)

CONTAINER ID   IMAGE                 COMMAND        CREATED          STATUS          PORTS                                           
                           NAMES
394018ecf271   local_discourse/app   "/sbin/boot"   21 minutes ago   Up 21 minutes   0.0.0.0:80->80/tcp, :::80->80/tcp, 0.0.0.0:443->
443/tcp, :::443->443/tcp   app


Discourse container app is running


==================== PLUGINS ====================
          - git clone https://github.com/discourse/docker_manager.git

No non-official plugins detected.

See https://github.com/discourse/discourse/blob/main/lib/plugin/metadata.rb for the official list.

========================================
Discourse version at talk.technospider.com: NOT FOUND
Discourse version at localhost: NOT FOUND


==================== MEMORY INFORMATION ====================
OS: Linux
RAM (MB): 4055

               total        used        free      shared  buff/cache   available
Mem:            3867        1695         174          56        2345        2172
Swap:           3866          98        3768

==================== DISK SPACE CHECK ====================
---------- OS Disk Space ----------
Filesystem                         Size  Used Avail Use% Mounted on
/dev/mapper/ubuntu--vg-ubuntu--lv   19G   12G  6.0G  66% /

==================== DISK INFORMATION ====================
Disk /dev/loop0: 44.45 MiB, 46604288 bytes, 91024 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop1: 73.89 MiB, 77475840 bytes, 151320 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop2: 144.46 MiB, 151478272 bytes, 295856 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda: 40 GiB, 42949672960 bytes, 83886080 sectors
Disk model: VMware Virtual S
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 57115BC0-AFA9-4902-9910-BB09315092BA

Device       Start      End  Sectors  Size Type
/dev/sda1     2048  2203647  2201600    1G EFI System
/dev/sda2  2203648  6397951  4194304    2G Linux filesystem
/dev/sda3  6397952 83884031 77486080 36.9G Linux filesystem


Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 18.47 GiB, 19834863616 bytes, 38739968 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

==================== END DISK INFORMATION ====================

==================== MAIL TEST ====================
For a robust test, get an address from http://www.mail-tester.com/
Sending mail to REDACTED  . . 
Testing sending to technospider@icloud.com using smtppro.zoho.com:587, username:david@technospider.com with plain auth.
SMTP server connection successful.
Sending to technospider@icloud.com. . . 
Mail accepted by SMTP server.
Message-ID: 9e763c7d-b64d-4119-8f74-edd47154a799@talk.technospider.com

If you do not receive the message, check your SPAM folder
or test again using a service like http://www.mail-tester.com/.

If the message is not delivered it is not a problem with Discourse.
Check the SMTP server logs for the above Message ID to see why it
failed to deliver the message.

==================== DONE! ====================

And the test email arrives as expected.
I feel like I’m really close.

docker ps:

394018ecf271   local_discourse/app   "/sbin/boot"   47 minutes ago   Up 47 minutes   0.0.0.0:80->80/tcp, :::80->80/tcp, 0.0.0.0:443->443/tcp, :::443->443/tcp   app

There is no nginx or apache2 for that matter installed on the server.