First version of the uffd collection

TODO: The build role should probably be replaced by some intragration as a .build quadlet.

Signed-off-by: Nis Wechselberg <enbewe@enbewe.de>

README.md

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+# Ansible Collection - enbewe.uffd
+Collecion to deploy [uffd (**U**ser**F**erwaltungs**F**ronten**d**)](https://git.cccv.de/uffd/uffd) as OAuth/OIDC authentication service.
+
+## Playbooks
+### enbewe.uffd.build
+Deploys the role `enbewe.uffd.build` to all hosts of the `uffd` group.
+
+### enbewe.uffd.deploy
+Deploys the role `enbewe.uffd.uffd` to all hosts of the `uffd` group.
+
+## Roles
+### enbewe.uffd.build
+Creates the current image of uffd. The image is tagged with the current timestamp as well as 'latest'.
+This role could probably replaced by some build- and publishing job.
+
+#### Optional Variables
+
+**build_uffd_tempdir** *(Default: '/tmp/podman-uffd-build')*
+Path to use for building the uffd OCI container in. This path will be created as needed and removed again afterwards.
+
+**build_uffd_debian_version** *(Default: 'bullseye')*
+The debian version name to use for the uffd container.
+
+**build_uffd_force_rebuild** *(Default: false)*
+Flag to force the reduilding of the uffd container even if it already exists.
+
+**build_uffd_tag_latest** *(Default: true)*
+Flag to disable tagging the built image as `latest`.
+
+### enbewe.uffd.uffd
+Deploys uffd through a podman container.
+Additionally deploys an nginx container as a HTTP server for static files as well as uWSGI proxy.
+
+#### Required variables
+
+**uffd_secret_key**
+The secret key to use for uffd data.
+
+**uffd_initial_admin_user**
+Name of the initial admin user.
+
+**uffd_initial_admin_pw**
+Password of the initial admin user.
+
+**uffd_initial_admin_mail**
+E-Mail address of the initial admin user.
+
+#### Optional Variables
+
+**uffd_podman_network** *(Default: 'uffd-net')*
+Name of the podman network to use for uffd container and the nginx server.
+
+**uffd_conf_dir** *(Default: '/etc/uffd')*
+The directory to use for config files.
+
+**uffd_static_files_volume** *(Default: 'uffd-static-files')*
+The name of the podman volume to use for the static files of the uffd.
+
+**uffd_data_volume** *(Default: 'uffd-data')*
+The name of the podman volume to use for the runtime data of uffd.