DRAWIO_LIGHTBOX_URL config not working when self-hosted

[chookrib]

Preflight Checklist

• [ √ ] I agree to follow the Code of Conduct that this project adheres to.
• [ √ ] I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Describe the bug
I am using v20.5.3 self-hosted in domain like http://diagram.explame.com
When set DRAWIO_LIGHTBOX_URL value 'http://diagram.explame.com', the website will not working.

To Reproduce
Steps to reproduce the behavior:

1. Set window.DRAWIO_LIGHTBOX_URL = 'http://diagram.explame.com'; in preConfig.js
2. Open website http://diagram.explame.com
3. The website show error, see screenshots.
4. Remove config DRAWIO_LIGHTBOX_URL, website work correct. but Publish\Link... generate link with https://viewer.diagrams.net/.

Expected behavior
Set DRAWIO_LIGHTBOX_URL let Publish\Link... can generate with specified url.

Screenshots

draw.io version (In the Help->About menu of the draw.io editor):

• v20.5.3

Desktop (please complete the following information):

• OS: Windows 10
• Browser Chrome 107.0.5304.89

Additional context
I read #2149 #750 #2149 #2057, doesn't help solve the problem.

[davidjgraph]

Can you test again with the latest build?

[chookrib]

test with 20.6.0 and 20.6.2，same problem.

[jeffshead]

AlmaLinux 8.7, Portainer, Niginx Proxy Manager, Drawio v20.7.4
I'm experiencing the same issue.

version: '3.5'
services:
  drawio:
    image: jgraph/drawio
    container_name: drawio
    restart: unless-stopped
    environment:
      - DRAWIO_BASE_URL=https://dio.example.com
      - DRAWIO_VIEWER_URL=https://dio.example.com/js/viewer.min.js
      - DRAWIO_LIGHTBOX_URL=https://dio.example.com
    ports:
      - "127.0.0.1:8013:8080"
      - "127.0.0.1:8414:8443"

networks:
  default:
    name: npm_default
    external: true

[Fabiettus]

Is there a solution to this issue?
Drawio 20.8.20 on docker

[imshenyz]

test with 20.8.20，same problem.

[JoghurtMitDerEcke]

I had the same problem. I got it working with the following variables:

DRAWIO_BASE_URL=https://diagrams.example.com
DRAWIO_VIEWER_URL=https://diagrams.example.com/js/viewer.min.js
DRAWIO_LIGHTBOX_URL=https://diagrams.example.com/.

Note the /. at the end of the DRAWIO_LIGHTBOX_URL.

Hope it helps!

[m-mohamedin]

The DRAWIO_LIGHTBOX_URL must be different from the main url (DRAWIO_BASE_URL) such that it opens the lightbox directly.

So, @JoghurtMitDerEcke solution is the best workaround if you can't have a different url/subdomain.

Thanks

[fvsion]

AlmaLinux 8.7, Portainer, Niginx Proxy Manager, Drawio v20.7.4 I'm experiencing the same issue.

version: '3.5'
services:
  drawio:
    image: jgraph/drawio
    container_name: drawio
    restart: unless-stopped
    environment:
      - DRAWIO_BASE_URL=https://dio.example.com
      - DRAWIO_VIEWER_URL=https://dio.example.com/js/viewer.min.js
      - DRAWIO_LIGHTBOX_URL=https://dio.example.com
    ports:
      - "127.0.0.1:8013:8080"
      - "127.0.0.1:8414:8443"

networks:
  default:
    name: npm_default
    external: true

@jeffshead Did you ever find a solution for this, my setup is very similar with NPM.

[jeffshead]

@jeffshead Did you ever find a solution for this, my setup is very similar with NPM.

Solution: Add /. at the end as JoghurtMitDerEcke suggested in his comment.

Explanation: