APP_URL in evn file gets changed #2140

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OVERLORD · 2026-02-05T03:05:33+03:00

OVERLORD commented

2026-02-05 03:05:33 +03:00

Originally created by @PascalMinder on GitHub (Mar 6, 2021).

Describe the bug
I am not entirely sure why it happens. I think everytime my bookstack instance gets updated, the .env file changes, but only the APP_URL= gets changed. It's changed from my domain to an IP.
Since I use the docker container from linuxserver.io it also might be a problem from there.

Expected behavior
No changes in the config file.

Your Configuration (please complete the following information):

Exact BookStack Version (Found in settings): BookStack v0.31.5
Hosting Method (Nginx/Apache/Docker): Docker from Linuxserver.io and Traefik as reverse proxy

Originally created by @PascalMinder on GitHub (Mar 6, 2021). **Describe the bug** I am not entirely sure why it happens. I think everytime my bookstack instance gets updated, the `.env` file changes, but only the `APP_URL=` gets changed. It's changed from my domain to an IP. Since I use the docker container from linuxserver.io it also might be a problem from there. **Expected behavior** No changes in the config file. **Your Configuration (please complete the following information):** - Exact BookStack Version (Found in settings): BookStack v0.31.5 - Hosting Method (Nginx/Apache/Docker): Docker from Linuxserver.io and Traefik as reverse proxy

OVERLORD closed this issue

2026-02-05 03:05:35 +03:00

OVERLORD commented

2026-02-05 03:05:38 +03:00

@ssddanbrown commented on GitHub (Mar 6, 2021):

Hi @PascalMinder,

We don't do anything that would alter any .env options.
This will likely be this functionality within the linuxserver.io container.

I think passing the correct APP_URL directly to the container may prevent it from auto-changing on run.

@ssddanbrown commented on GitHub (Mar 6, 2021): Hi @PascalMinder, We don't do anything that would alter any `.env` options. This will likely be [this functionality](https://github.com/linuxserver/docker-bookstack/blob/master/root/etc/cont-init.d/50-config#L61) within the linuxserver.io container. I think passing the correct `APP_URL` directly to the container may prevent it from auto-changing on run.

OVERLORD commented

2026-02-05 03:05:42 +03:00

@PascalMinder commented on GitHub (Mar 6, 2021):

Hi @PascalMinder,

We don't do anything that would alter any .env options.
This will likely be this functionality within the linuxserver.io container.

I think passing the correct APP_URL directly to the container may prevent it from auto-changing on run.

Hey, thank you very much. I'll change it and will see what happens.

@PascalMinder commented on GitHub (Mar 6, 2021): > > > Hi @PascalMinder, > > We don't do anything that would alter any `.env` options. > This will likely be [this functionality](https://github.com/linuxserver/docker-bookstack/blob/master/root/etc/cont-init.d/50-config#L61) within the linuxserver.io container. > > I think passing the correct `APP_URL` directly to the container may prevent it from auto-changing on run. Hey, thank you very much. I'll change it and will see what happens.

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Reference: starred/BookStack#2140