Chore: add admin user and seed staging

added creation of the admin user, the basic homeboard and all basic setup tasks.
Todo: Cleanup

roles/homarr/templates/docker-compose.yml.j2

@@ -2,17 +2,29 @@
 #     Homarr - A simple, yet powerful dashboard for your server.      #
 #---------------------------------------------------------------------#
 services:
-  homarr:
+  {{ homarr_service_name }}:
     container_name: {{ homarr_service_name }}
     image: {{ homarr_image }}
     restart: unless-stopped
     volumes:
 {% if homarr_use_docker %}
-      - /var/run/docker.sock:/var/run/docker.sock # Optional, only if you want docker integration
+      - /var/run/docker.sock:/var/run/docker.sock
 {% endif %}
       - {{ homarr_docker_volume_dir }}/homarr/appdata:/appdata
     environment:
-      - SECRET_ENCRYPTION_KEY={{ homarr_secret_encryption_key }}
+      TZ: "Europe/Zurich"
+      BASE_URL: "{{ homarr_base_url }}"
+      NEXTAUTH_URL: "{{ homarr_base_url }}"
+      SECRET_ENCRYPTION_KEY: "{{ homarr_secret_encryption_key }}"
+      # Auth: Credentials + OIDC
+      AUTH_PROVIDERS: "credentials,oidc"
+      AUTH_OIDC_ISSUER: "{{ oidc_issuer }}"
+      AUTH_OIDC_CLIENT_ID: "{{ oidc_client_id }}"
+      AUTH_OIDC_CLIENT_SECRET: "{{ oidc_client_secret }}"
+      AUTH_OIDC_CLIENT_NAME: "{{ oidc_client_name | default('Keycloak') }}"
+      AUTH_OIDC_SCOPE_OVERWRITE: "{{ oidc_scopes | default('openid email profile groups') }}"
+      AUTH_OIDC_GROUPS_ATTRIBUTE: "{{ oidc_groups_attribute | default('groups') }}"
+      AUTH_OIDC_AUTO_LOGIN: "{{ oidc_auto_login | default('false') }}"
     networks:
       - {{ homarr_traefik_network }}
     labels: