Automate build number tagging and sync

backend/Dockerfile

@@ -2,8 +2,11 @@ FROM python:3.12-slim
 
 WORKDIR /app
 
+ARG BUILD_NUMBER=dev
+
 ENV PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONUNBUFFERED=1
+    PYTHONUNBUFFERED=1 \
+    SITE_BUILD_NUMBER=${BUILD_NUMBER}
 
 COPY backend/requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt

backend/app/main.py

@@ -4,7 +4,7 @@ from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 
 from .config import settings
-from .db import init_db
+from .db import init_db, set_setting
 from .routers.requests import (
     router as requests_router,
     startup_warmup_requests_cache,
@@ -41,6 +41,8 @@ async def health() -> dict:
 @app.on_event("startup")
 async def startup() -> None:
     init_db()
+    if settings.site_build_number and settings.site_build_number.strip():
+        set_setting("site_build_number", settings.site_build_number.strip())
     runtime = get_runtime_settings()
     configure_logging(runtime.log_level, runtime.log_file)
     asyncio.create_task(run_daily_jellyfin_sync())