Run container with uvicorn, move templates for packaging, add systemd config for container deployment, add OIDC_TEST_SETTINGS_FILE env var for setting, misc fixes

src/oidc_test/settings.py

@@ -1,6 +1,8 @@
+from os import environ
 import string
 import random
 from typing import Type, Tuple
+from pathlib import Path
 
 from pydantic import BaseModel, computed_field
 from pydantic_settings import (
@@ -56,7 +58,16 @@ class Settings(BaseSettings):
             init_settings,
             env_settings,
             file_secret_settings,
-            YamlConfigSettingsSource(settings_cls, "settings.yaml"),
+            YamlConfigSettingsSource(
+                settings_cls,
+                Path(
+                    Path(
+                        environ.get(
+                            "OIDC_TEST_SETTINGS_FILE", Path.cwd() / "settings.yaml"
+                        ),
+                    )
+                ),
+            ),
             dotenv_settings,
         )