Add initial XWiki role draft

- Added web-app-xwiki draft role with config, vars, templates, and docs
- Registered new network and port for XWiki
- Adjusted MediaWiki canonical domain to media.wiki

https://chatgpt.com/share/68c18c65-a008-800f-8d62-b695df2c6fa1

roles/web-app-xwiki/templates/Dockerfile.j2

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+FROM {{ XWIKI_IMAGE }}:{{ XWIKI_VERSION }}

roles/web-app-xwiki/templates/docker-compose.yml.j2

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+{% include 'roles/docker-compose/templates/base.yml.j2' %}
+  application:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: "{{ XWIKI_IMAGE_CUSTOM }}"
+    container_name: "{{ XWIKI_CONTAINER }}"
+    hostname: '{{ XWIKI_HOSTNAME}}'
+    command: ["all"]
+    ports:
+      - "127.0.0.1:{{ ports.localhost.http[application_id] }}:{{ container_port }}"
+    volumes:
+      - 'data:/usr/local/xwiki'
+{% include 'roles/docker-container/templates/healthcheck/curl.yml.j2' %}
+{% include 'roles/docker-container/templates/base.yml.j2' %}
+{% include 'roles/docker-container/templates/depends_on/dmbs_excl.yml.j2' %}
+{% include 'roles/docker-container/templates/networks.yml.j2' %}
+
+{% include 'roles/docker-compose/templates/volumes.yml.j2' %}
+  data:
+    name: {{ XWIKI_DATA_VOLUME }}
+
+{% include 'roles/docker-compose/templates/networks.yml.j2' %}

roles/web-app-xwiki/templates/env.j2

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+DB_USER="{{ database_username }}"
+DB_PASSWORD="{{ database_password }}"
+DB_HOST="{{ database_host }}"
+
+### Pretix core
+#XWIKI_XWIKI_INSTANCE_NAME="{{ PRIMARY_DOMAIN | upper }} Tickets"
+#XWIKI_XWIKI_ALLOWED_HOSTS="{{ XWIKI_HOSTNAME }},127.0.0.1,localhost"
+#XWIKI_XWIKI_URL="{{ XWIKI_URL }}"
+#XWIKI_XWIKI_AUTH_BACKENDS="xwiki.base.auth.NativeAuthBackend{% if XWIKI_OIDC_ENABLED %},xwiki_oidc.auth.OIDCAuthBackend{% endif %}"
+#
+### Locale
+#XWIKI_LOCALE_TIMEZONE="{{ HOST_TIMEZONE }}"
+#
+### Database
+#XWIKI_DATABASE_BACKEND="postgresql"
+#XWIKI_DATABASE_NAME="{{ database_name }}"
+#XWIKI_DATABASE_USER="{{ database_username }}"
+#XWIKI_DATABASE_PASSWORD="{{ database_password }}"
+#XWIKI_DATABASE_HOST="{{ database_host }}"
+#XWIKI_DATABASE_PORT="{{ database_port }}"
+#XWIKI_WEB_CONCURRENCY="{{ POSTGRES_ALLOWED_AVG_CONNECTIONS }}"
+#XWIKI_WORKER_THREADS="{{ (POSTGRES_ALLOWED_AVG_CONNECTIONS | int // 2 ) }}"
+#
+#{% if XWIKI_REDIS_ENABLED %}
+### Redis
+#XWIKI_REDIS_SESSIONS="true"
+#XWIKI_REDIS_LOCATION="redis://redis:6379/{{ XWIKI_REDIS_CACHE_DB }}"
+#CELERY_BROKER_URL="redis://redis:6379/{{ XWIKI_REDIS_BROKER_DB }}"
+#CELERY_RESULT_BACKEND="redis://redis:6379/{{ XWIKI_REDIS_RESULT_DB }}"
+#{% endif %}
+#
+#{% if XWIKI_OIDC_ENABLED %}
+### OIDC (plugin)
+#XWIKI_OIDC_TITLE="{{ XWIKI_OIDC_LABEL | replace('\"','\\\"') }}"
+#XWIKI_OIDC_ISSUER="{{ XWIKI_OIDC_ISSUER }}"
+#XWIKI_OIDC_AUTHORIZATION_ENDPOINT="{{ XWIKI_OIDC_AUTH_URL }}"
+#XWIKI_OIDC_TOKEN_ENDPOINT="{{ XWIKI_OIDC_TOKEN_URL }}"
+#XWIKI_OIDC_USERINFO_ENDPOINT="{{ XWIKI_OIDC_USERINFO_URL }}"
+#XWIKI_OIDC_END_SESSION_ENDPOINT="{{ XWIKI_OIDC_LOGOUT_URL }}"
+#XWIKI_OIDC_JWKS_URI="{{ XWIKI_OIDC_JWKS_URL }}"
+#XWIKI_OIDC_CLIENT_ID="{{ XWIKI_OIDC_CLIENT_ID }}"
+#XWIKI_OIDC_CLIENT_SECRET="{{ XWIKI_OIDC_CLIENT_SECRET }}"
+#XWIKI_OIDC_SCOPES="{{ XWIKI_OIDC_SCOPES }}"
+#XWIKI_OIDC_UNIQUE_ATTRIBUTE="{{ XWIKI_OIDC_UNIQUE_ATTRIBUTE }}"
+#{% endif %}