[BUG] Environment variables HOST_URL is not working

[Derison]

What is the bug?
When trying to setup a OpenSearch Map Server and using it in production, it is not possibel to adjust the HOST_URL. It'll always be http://localhost:8080 when requesting each tile.

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Execute:

docker run \
    -v tiles-data:/usr/src/app/public/tiles/data/ \
    -e HOST_URL='http://example.com' \
    -p 8080:8080 \
    opensearchproject/opensearch-maps-server \
    run

2. Check in Network tab and see that it tries to request the png on http://localhost:8080/0/0/0.png

What is the expected behavior?
Requesting the png via http://example.com/0/0/0.png

What is your host/environment?

• OS: Docker version 27.3.1, build ce1223035a
• Version 1.0.0
• Plugins

Do you have any screenshots?
If applicable, add screenshots to help explain your problem.

Do you have any additional context?
Add any other context about the problem.

[Derison]

Okay, I think I've solved it by myself. It looks like I misunderstood the usage of the Image. The demo.html cleared a few things up for me. Thank anyways!