only export allowlisted environment_vars

apply_config_env_vars wrote every unprefixed environment_vars key into os.environ and exported every FRIGATE_ key, so a config could set LD_PRELOAD or LIGHTER_ANE_EP to load a library into Frigate or its children, or set FRIGATE_RUN_AS_ROOT to turn off the ffmpeg.path writable-tree guard. Only the documented names are now exported, each with a value check, and a name the container already sets is never overwritten. FRIGATE_ keys still feed substitution, but only FRIGATE_JWT_SECRET is exported. Anything else logs a warning naming the key.

docker/main/rootfs/usr/local/go2rtc/create_config.py

@@ -40,16 +40,10 @@ try:
 except FileNotFoundError:
     config: dict[str, Any] = {}
 
-# No validator runs here, so install environment_vars ourselves. FRIGATE_
-# names only: anything else lands in os.environ, where the exec gate reads
-# GO2RTC_ALLOW_ARBITRARY_EXEC.
+# No validator runs here, so install environment_vars ourselves.
 config_env_vars = config.get("environment_vars")
 apply_config_env_vars(
-    {
-        key: value
-        for key, value in config_env_vars.items()
-        if str(key).startswith("FRIGATE_")
-    }
+    {str(key): value for key, value in config_env_vars.items()}
     if isinstance(config_env_vars, dict)
     else {}
 )