[BUG] Hostname disappears from compose.yml configuration file after successful deployment

[dengjunwen]

Description

I have encountered an issue where the hostname disappears from the compose.yml configuration file after setting it successfully during container deployment. When I view the previous deployment configuration file, the hostname is present. However, when I check the current configuration file, the hostname is missing, as shown in the screenshot below.

Steps to reproduce the issue:

1. Set the hostname. Stacks --> item ----> edit ------> deploy . see the images
2. Verify that the hostname is successfully set.
3. Click on the "View compose.yml" option to check the configuration file.

What happens:
The hostname is missing from the current configuration file.

What should happen:
The hostname should be included in the current configuration file.

Additional information (e.g. docker version, cluster setup,...):

[beilyly]

encounter a same issue. anyboy can help ?