Onlyoffice not working behind caddy

Hi. Here is my full setup for seafile on single node. I found onlyoffice docs for setting up behind nginx reverse proxy and partially rewrote it for caddy-docker-proxy.
This setup is behind nginx proxy manager, which is responsible for https.
Hope it helps.

docker-compose.yml
services:
  caddy:
    image: ${SEAFILE_CADDY_IMAGE:-lucaslorentz/caddy-docker-proxy:2.9-alpine}
    container_name: seafile-caddy
    restart: unless-stopped
    ports:
      - 80:80
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - ${SEAFILE_CADDY_VOLUME:-/opt/seafile-caddy}:/data/caddy
    healthcheck:
      test: ["CMD-SHELL", "curl --fail http://localhost:2019/metrics || exit 1"]
      start_period: 20s
      interval: 20s
      timeout: 5s
      retries: 3
    labels:
      caddy: ":80"
      caddy.0_map: "{header.x-forwarded-proto} {proto_override}"
      caddy.0_map.~^$: "{scheme}"
      caddy.0_map.default: "{header.x-forwarded-proto}"
      caddy.1_map: "{host} {this_host}"
      caddy.1_map.~^$: "${SEAFILE_SERVER_HOSTNAME}"
      caddy.1_map.default: "{host}"
      caddy.2_map: "{header.x-forwarded-host} {host_override}"
      caddy.2_map.~^$: "{this_host}"
      caddy.2_map.default: "{header.x-forwarded-host}"

  seafile:
    image: ${SEAFILE_IMAGE:-seafileltd/seafile-pro-mc:13.0-latest}
    container_name: seafile
    restart: unless-stopped
    volumes:
      - ${SEAFILE_VOLUME:-/opt/seafile-data}:/shared
    environment:
      - INIT_SEAFILE_MYSQL_ROOT_PASSWORD=${INIT_SEAFILE_MYSQL_ROOT_PASSWORD:-}
      - SEAFILE_MYSQL_DB_HOST=${SEAFILE_MYSQL_DB_HOST:-db}
      - SEAFILE_MYSQL_DB_PORT=${SEAFILE_MYSQL_DB_PORT:-3306}
      - SEAFILE_MYSQL_DB_USER=${SEAFILE_MYSQL_DB_USER:-seafile}
      - SEAFILE_MYSQL_DB_PASSWORD=${SEAFILE_MYSQL_DB_PASSWORD:?Variable is not set or empty}
      - SEAFILE_MYSQL_DB_CCNET_DB_NAME=${SEAFILE_MYSQL_DB_CCNET_DB_NAME:-ccnet_db}
      - SEAFILE_MYSQL_DB_SEAFILE_DB_NAME=${SEAFILE_MYSQL_DB_SEAFILE_DB_NAME:-seafile_db}
      - SEAFILE_MYSQL_DB_SEAHUB_DB_NAME=${SEAFILE_MYSQL_DB_SEAHUB_DB_NAME:-seahub_db}
      - TIME_ZONE=${TIME_ZONE:-Etc/UTC}
      - INIT_SEAFILE_ADMIN_EMAIL=${INIT_SEAFILE_ADMIN_EMAIL:-me@example.com}
      - INIT_SEAFILE_ADMIN_PASSWORD=${INIT_SEAFILE_ADMIN_PASSWORD:-asecret}
      - SEAFILE_SERVER_HOSTNAME=${SEAFILE_SERVER_HOSTNAME:?Variable is not set or empty}
      - SEAFILE_SERVER_PROTOCOL=${SEAFILE_SERVER_PROTOCOL:-http}
      - SITE_ROOT=${SITE_ROOT:-/}
      - NON_ROOT=${NON_ROOT:-false}
      - JWT_PRIVATE_KEY=${JWT_PRIVATE_KEY:?Variable is not set or empty}
      - SEAFILE_LOG_TO_STDOUT=${SEAFILE_LOG_TO_STDOUT:-false}
      - ENABLE_SEADOC=${ENABLE_SEADOC:-true}
      - SEADOC_SERVER_URL=${SEAFILE_SERVER_PROTOCOL:-http}://${SEAFILE_SERVER_HOSTNAME:?Variable is not set or empty}/sdoc-server
      - CACHE_PROVIDER=${CACHE_PROVIDER:-redis}
      - REDIS_HOST=${REDIS_HOST:-redis}
      - REDIS_PORT=${REDIS_PORT:-6379}
      - REDIS_PASSWORD=${REDIS_PASSWORD:-}
      - MEMCACHED_HOST=${MEMCACHED_HOST:-memcached}
      - MEMCACHED_PORT=${MEMCACHED_PORT:-11211}
      - SEAF_SERVER_STORAGE_TYPE=${SEAF_SERVER_STORAGE_TYPE:-}
      - S3_COMMIT_BUCKET=${S3_COMMIT_BUCKET:-}
      - S3_FS_BUCKET=${S3_FS_BUCKET:-}
      - S3_BLOCK_BUCKET=${S3_BLOCK_BUCKET:-}
      - S3_KEY_ID=${S3_KEY_ID:-}
      - S3_SECRET_KEY=${S3_SECRET_KEY:-}
      - S3_USE_V4_SIGNATURE=${S3_USE_V4_SIGNATURE:-true}
      - S3_AWS_REGION=${S3_AWS_REGION:-us-east-1}
      - S3_HOST=${S3_HOST:-}
      - S3_USE_HTTPS=${S3_USE_HTTPS:-true}
      - S3_PATH_STYLE_REQUEST=${S3_PATH_STYLE_REQUEST:-false}
      - S3_SSE_C_KEY=${S3_SSE_C_KEY:-}
      - ENABLE_NOTIFICATION_SERVER=${ENABLE_NOTIFICATION_SERVER:-false}
      - INNER_NOTIFICATION_SERVER_URL=${INNER_NOTIFICATION_SERVER_URL:-http://notification-server:8083}
      - NOTIFICATION_SERVER_URL=${NOTIFICATION_SERVER_URL:-${SEAFILE_SERVER_PROTOCOL:-http}://${SEAFILE_SERVER_HOSTNAME:?Variable is not set or empty}/notification}
      - ENABLE_SEAFILE_AI=${ENABLE_SEAFILE_AI:-false}
      - SEAFILE_AI_SERVER_URL=${SEAFILE_AI_SERVER_URL:-http://seafile-ai:8888}
      - SEAFILE_AI_SECRET_KEY=${JWT_PRIVATE_KEY:?Variable is not set or empty}
      - MD_FILE_COUNT_LIMIT=${MD_FILE_COUNT_LIMIT:-100000}
    labels:
      # caddy: ${SEAFILE_SERVER_PROTOCOL:-http}://${SEAFILE_SERVER_HOSTNAME:?Variable is not set or empty}
      caddy: ":80"
      caddy.reverse_proxy: "{{upstreams 80}}"
      caddy.reverse_proxy.0_header_up: X-Forwarded-Host {host_override}
      caddy.reverse_proxy.1_header_up: X-Forwarded-Proto {proto_override}
    depends_on:
      db:
        condition: service_healthy
      redis:
        condition: service_started
  
  seadoc:
    image: ${SEADOC_IMAGE:-seafileltd/sdoc-server:2.0-latest}
    container_name: seadoc
    restart: unless-stopped
    volumes:
      - ${SEADOC_VOLUME:-/opt/seadoc-data/}:/shared
    environment:
      - DB_HOST=${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:-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: ":80"
      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
        
  db:
    image: ${SEAFILE_DB_IMAGE:-mariadb:10.11}
    container_name: seafile-mysql
    restart: unless-stopped
    environment:
      - MYSQL_ROOT_PASSWORD=${INIT_SEAFILE_MYSQL_ROOT_PASSWORD:-}
      - MYSQL_LOG_CONSOLE=true
      - MARIADB_AUTO_UPGRADE=1
    volumes:
      - "${SEAFILE_MYSQL_VOLUME:-/opt/seafile-mysql/db}:/var/lib/mysql"
    healthcheck:
      test:
        [
          "CMD",
          "/usr/local/bin/healthcheck.sh",
          "--connect",
          "--mariadbupgrade",
          "--innodb_initialized",
        ]
      interval: 20s
      start_period: 30s
      timeout: 5s
      retries: 10

  redis:
    image: ${SEAFILE_REDIS_IMAGE:-redis}
    container_name: seafile-redis
    restart: unless-stopped
    command:
      - /bin/sh
      - -c
      - redis-server --requirepass "$$REDIS_PASSWORD"
    environment:
      - REDIS_PASSWORD=${REDIS_PASSWORD:-}

  elasticsearch:
    image: ${SEAFILE_ELASTICSEARCH_IMAGE:-elasticsearch:8.15.0}
    container_name: seafile-elasticsearch
    restart: unless-stopped
    environment:
      - discovery.type=single-node
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms2g -Xmx2g"
      - "xpack.security.enabled=false"
    ulimits:
      memlock:
       soft: -1
       hard: -1
    mem_limit: 4g
    volumes:
      - "${SEAFILE_ELASTICSEARCH_VOLUME:-/opt/seafile-elasticsearch/data}:/usr/share/elasticsearch/data"

  onlyoffice:
    image: ${ONLYOFFICE_IMAGE:-onlyoffice/documentserver:8.1.0.1}
    restart: unless-stopped
    container_name: seafile-onlyoffice
    environment:
      #- DB_TYPE=${DB_TYPE:-mariadb}
      #- DB_HOST=${SEAFILE_MYSQL_DB_HOST:-db}
      #- DB_USER=${SEAFILE_MYSQL_DB_USER:-seafile}
      #- DB_PWD=${SEAFILE_MYSQL_DB_PASSWORD:?Variable is not set or empty}
      - JWT_ENABLED=true
      - JWT_SECRET=${ONLYOFFICE_JWT_SECRET:?Variable is not set or empty}
    volumes:
      - ${ONLYOFFICE_VOLUME:-/opt/onlyoffice}/logs:/var/log/onlyoffice
      - ${ONLYOFFICE_VOLUME:-/opt/onlyoffice}/data:/var/www/onlyoffice/Data
      - ${ONLYOFFICE_VOLUME:-/opt/onlyoffice}/lib:/var/lib/onlyoffice
    labels:
      caddy: ":80"
      caddy.handle_path: "/documentserver/*"
      caddy.handle_path.reverse_proxy: "{{upstreams 80}}"
      caddy.handle_path.reverse_proxy.0_header_up: X-Forwarded-Host {host}/documentserver
      caddy.handle_path.reverse_proxy.1_header_up: X-Forwarded-Proto {proto_override}