[BUG] BASE_URL not applied (white page) in 4.53.10 — init chowns wrong index.html path, regression of #124 #126

Is there an existing issue for this?

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Current Behavior

When running behind a sub-path reverse proxy (BASE_URL set, e.g. /ombi), the web UI serves a blank/white page.

The served index.html keeps <base href="/">, so all JS/CSS assets are requested from the domain root instead of the sub-path and return 404 (the proxy only routes the sub-path to the container).

Startup logs show:

Base Url: /ombi
Error attempting to write Base URL, see here: https://docs.ombi.app/info/known-faults/#unauthorized-access-to-indexhtml

Root cause (verified): the init script /etc/s6-overlay/s6-rc.d/init-ombi-config/run chowns the wrong path:

lsiown abc:abc /app/ombi/ClientApp/dist/index.html

In 4.53.10 the Angular build output moved into a browser/ subfolder. The actual file is /app/ombi/ClientApp/dist/browser/index.html, still owned by 1001:1001. Because the real file is never chowned to abc (PUID), Ombi cannot rewrite it on startup, so the <base href> is never updated.

This is exactly what #124 already fixed (changing the path to dist/browser/index.html), but the current 4.53.10 image ships the old path again — the fix appears to have regressed (the later LSIO_READ_ONLY_FS change reintroduced the pre-#124 path).

Expected Behavior

With BASE_URL set, Ombi rewrites index.html to the correct <base href> and the UI loads behind the sub-path (as it did in 4.53.5).

Steps To Reproduce

1. Run linuxserver/ombi:4.53.10 with BASE_URL=/ombi and PUID/PGID set to a non-1001 user (e.g. 1000).
2. Reverse-proxy the /ombi sub-path to the container.
3. Open the sub-path → blank page; the served index.html still has <base href="/">.

Environment

OS: Linux
Image: linuxserver/ombi:4.53.10 (also tagged latest)

Verification

# 4.53.5 (works): index.html sits flat in dist/, matching the hardcoded chown path
/app/ombi/ClientApp/dist/index.html          1001:1001

# 4.53.10 (broken): index.html moved under browser/, chown path unchanged
/app/ombi/ClientApp/dist/browser/index.html  1001:1001

The init-ombi-config/run script is otherwise identical between 4.53.5 and 4.53.10; only the on-disk location of index.html changed.

Suggested fix

Re-apply #124: point the chown in init-ombi-config/run at /app/ombi/ClientApp/dist/browser/index.html.