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

deployment/README.md

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+# Deployment / installation
+
+This documentation covers the specifics of Oidc-fastapi-test deployment, but
+it does no cover application configuration details,
+the set up of a public facing web server handling dns domain / https security.
+
+*Oidc-fastapi-test* is shipped as containers for easy and effective installation,
+and packages to deploy them for different environments.
+
+There is 1 containers:
+
+- oidc-fast-test (Python server)
+
+Commands below assume that they are run from their respective directories
+(`deployment/systemd`, `deployment/kubernetes`, ...).
+
+## Systemd
+
+With the help of *podman*, systemd can handle starting/restarting services, etc,
+even with a non-privileged user.
+
+The 1 container is in the same *pod*, as it is meant primarily for a lightweight
+production environment, but this can be easily adapted.
+
+The `deployment/systemd` directory contains files used for running
+*Oidc-fastapi-test* with Systemd.
+Podman is used to facilitate the creation of the relevant services.
+
+### Deployment
+
+```sh
+cp -r * $HOME/.config/containers/systemd/
+systemctl --user daemon-reload
+systemctl --user start oidc-fastapi-test-pod.service
+```
+
+Note that starting on system boot requires the user to be enabled accordingly with:
+
+```sh
+sudo loginctl enable-linger <username>
+```