Add Seafile service and update Caddyfile

- seafile/: docker compose setup (seafile-mc 13, mariadb, redis, seadoc, caddy-proxy)
- Expose seafile on 127.0.0.1:8078, proxied via Caddy at docs.alogins.net
- Fix: SEAFILE_SERVER_PROTOCOL=https to avoid CSRF errors
- Fix: TIME_ZONE=Asia/Dubai (Etc/UTC+4 was invalid)
- Caddyfile: add docs.alogins.net → localhost:8078
- .gitignore: exclude seafile/.env (credentials stored in Vaultwarden)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

seafile/seadoc.yml

@@ -0,0 +1,40 @@
+services:
+
+  seadoc:
+    image: ${SEADOC_IMAGE:-seafileltd/sdoc-server:2.0-latest}
+    container_name: seadoc
+    restart: unless-stopped
+    volumes:
+      - ${SEADOC_VOLUME:-/opt/seadoc-data/}:/shared
+    # ports:
+    #   - "80:80"
+    environment:
+      - DB_HOST=${SEAFILE_MYSQL_DB_HOST:-db}
+      - DB_PORT=${SEAFILE_MYSQL_DB_PORT:-3306}
+      - DB_USER=${SEAFILE_MYSQL_DB_USER:-seafile}
+      - DB_PASSWORD=${SEAFILE_MYSQL_DB_PASSWORD:?Variable is not set or empty}
+      - DB_NAME=${SEADOC_MYSQL_DB_NAME:-${SEAFILE_MYSQL_DB_SEAHUB_DB_NAME:-seahub_db}}
+      - TIME_ZONE=${TIME_ZONE:-Etc/UTC}
+      - JWT_PRIVATE_KEY=${JWT_PRIVATE_KEY:?Variable is not set or empty}
+      - NON_ROOT=${NON_ROOT:-false}
+      - SEAHUB_SERVICE_URL=${SEAFILE_SERVICE_URL:-http://seafile}
+    labels:
+      caddy: ${SEAFILE_SERVER_PROTOCOL:-http}://${SEAFILE_SERVER_HOSTNAME:?Variable is not set or empty}
+      caddy.@ws.0_header: "Connection *Upgrade*"
+      caddy.@ws.1_header: "Upgrade websocket"
+      caddy.0_reverse_proxy: "@ws {{upstreams 80}}"
+      caddy.1_handle_path: "/socket.io/*"
+      caddy.1_handle_path.0_rewrite: "* /socket.io{uri}"
+      caddy.1_handle_path.1_reverse_proxy: "{{upstreams 80}}"
+      caddy.2_handle_path: "/sdoc-server/*"
+      caddy.2_handle_path.0_rewrite: "* {uri}"
+      caddy.2_handle_path.1_reverse_proxy: "{{upstreams 80}}"
+    depends_on:
+      db:
+        condition: service_healthy
+    networks:
+      - seafile-net
+
+networks:
+  seafile-net:
+    name: seafile-net