Add mediaserver, rm .gitignore, FQCN, Jellyfin

- Added development "mediaserver" playbook for testing
- rm .gitignore in roles dir since no external ansible roles are used
- Update a part of the base role to use FQCN for linting
- Added "jellyfin" role to install Jellyfin with docker-compose
- Updated Traefik to use the loopback for default web entry points
- Simplified Traefik docker-compose vars, Ansible sets defaults

roles/jellyfin/defaults/main.yml

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+jellyfin_name: jellyfin
+jellyfin_volume: "{{ jellyfin_name }}"
+jellyfin_router: "{{ jellyfin_name }}"
+jellyfin_rooturl: "https://{{ jellyfin_domain }}"
+jellyfin_root: "{{ docker_compose_root }}/{{ jellyfin_name }}"

roles/jellyfin/handlers/main.yml

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+- name: Restart Jellyfin
+  service:
+    name: "{{ docker_compose_service }}@{{ jellyfin_name }}"
+    state: restarted
+  listen: restart_jellyfin

roles/jellyfin/tasks/main.yml

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+- name: Create Jellyfin directory
+  ansible.builtin.file:
+    path: "{{ jellyfin_root }}"
+    state: directory
+
+- name: Create jellyfin user
+  user:
+    name: jellyfin
+    state: present
+
+- name: jellyfin user uid
+  getent:
+    database: passwd
+    key: jellyfin
+
+- name: jellyfin user gid
+  getent:
+    database: group
+    key: jellyfin
+
+- name: Install Jellyfin's docker-compose file
+  template:
+    src: docker-compose.yml.j2
+    dest: "{{ jellyfin_root }}/docker-compose.yml"
+  notify: restart_jellyfin
+
+- name: Install Jellyfin's docker-compose variables
+  template:
+    src: compose-env.j2
+    dest: "{{ jellyfin_root }}/.env"
+  notify: restart_jellyfin
+
+- name: Start and enable Jellyfin service
+  service:
+    name: "{{ docker_compose_service }}@{{ jellyfin_name }}"
+    state: started
+    enabled: true

roles/jellyfin/templates/compose-env.j2

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+# {{ ansible_managed }}
+jellyfin_version={{ jellyfin_version }}
+jellyfin_name={{ jellyfin_name }}
+jellyfin_domain={{ jellyfin_domain }}
+jellyfin_rooturl={{ jellyfin_rooturl }}

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

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+version: '3.7'
+
+volumes:
+  {{ jellyfin_volume }}:
+
+networks:
+  traefik:
+    external: true
+
+services:
+  jellyfin:
+    image: "jellyfin/jellyfin:${jellyfin_version}"
+    container_name: "${jellyfin_name}"
+    networks:
+      - traefik
+    labels:
+      - "traefik.http.routers.{{ jellyfin_router }}.rule=Host(`{{ jellyfin_domain }}`)"
+{% if traefik_http_only %}
+      - "traefik.http.routers.{{ jellyfin_router }}.entrypoints=web"
+{% else %}
+      - "traefik.http.routers.{{ jellyfin_router }}.entrypoints=websecure"
+{% endif %}
+      - "traefik.http.services.{{ jellyfin_router }}.loadbalancer.server.port=8096"
+      - "traefik.docker.network=traefik"
+      - "traefik.enable=true"
+    volumes:
+      - ./config:/config
+      - ./cache:/cache
+      - {{ jellyfin_volume }}:/media