Copy URL button missing after file upload in Docker deployment

[SonivelY]

Description

After deploying MicroBin via Docker, file uploads work correctly, but the "Copy URL" button does not appear after uploading a file.

The uploaded file is accessible normally, however the UI only shows the upload result without the expected "Copy URL" action.

Environment
Deployment method: Docker
Image: ghcr.io/szabodanika/microbin:latest
Browser: Chrome / Edge
Access method: Reverse proxy (Nginx) / direct port access
OS: Linux
Steps to reproduce
Deploy MicroBin using Docker
Upload any file
Wait for upload completion
Observe that the "Copy URL" button is missing
Expected behavior

After uploading a file, a visible "Copy URL" button should appear so the upload link can be copied easily.

Actual behavior

The upload succeeds, but no "Copy URL" button is shown.

Additional notes

Possible related observations:

Happens under HTTP access
May be related to navigator.clipboard
No obvious backend errors
Browser console may show clipboard/security related warnings

Please let me know if more logs or screenshots are needed.

[SonivelY]