Add pydantic-settings support and .env file loading

.env.example

@@ -0,0 +1,2 @@
+# Path to the Plex config INI file (default: ~/.plexconfig.ini)
+# PLEXADM_CONFIG=/path/to/.plexconfig.ini

README.md

@@ -573,3 +573,22 @@ bash scripts/mass_process.sh
 ## Naming Scheme
 
 See [docs/naming-scheme.md](./docs/naming-scheme.md).
+
+## Using a .env file
+
+Rather than embedding credentials in your `docker-compose.yml`, you can store them in a `.env` file and bind-mount it into the container:
+
+```bash
+cp .env.example .env
+# edit .env with your values
+```
+
+```yaml
+services:
+  app:
+    image: ghcr.io/jasmeralia/plexscripts:latest
+    volumes:
+      - /path/to/your/.env:/app/.env:ro
+```
+
+The app loads `/app/.env` automatically on startup. Any value in `.env` can still be overridden by an explicit `environment:` entry in your Compose file.

plexadm/config.py

@@ -5,6 +5,10 @@
 from dataclasses import dataclass
 from pathlib import Path
 
+from dotenv import load_dotenv
+
+load_dotenv()
+
 
 @dataclass(frozen=True)
 class PlexConfig:

requirements.txt

@@ -1 +1,3 @@
 plexapi
+
+pydantic-settings>=2.0