Stuck in login page loop after install

Hi, I have just managed to install Frappe on my system using the simple Docker Compose setup from frappe_docker/pwd.yml at main · frappe/frappe_docker. Since I am running multiple services on my system, I am using Traefik as a reverse proxy to separate them using hostnames. Thus I slightly modified the Docker Compose file to be as follows:

version: "3"

services:
  backend:
    image: frappe/erpnext:v15.45.5
    networks:
      - frappe_network
    deploy:
      restart_policy:
        condition: on-failure
    volumes:
      - sites:/home/frappe/frappe-bench/sites
      - logs:/home/frappe/frappe-bench/logs
    environment:
      DB_HOST: db
      DB_PORT: "3306"
      MYSQL_ROOT_PASSWORD: admin
      MARIADB_ROOT_PASSWORD: admin

  configurator:
    image: frappe/erpnext:v15.45.5
    networks:
      - frappe_network
    deploy:
      restart_policy:
        condition: none
    entrypoint:
      - bash
      - -c
    command:
      - >
        ls -1 apps > sites/apps.txt;
        bench set-config -g db_host $$DB_HOST;
        bench set-config -gp db_port $$DB_PORT;
        bench set-config -g redis_cache "redis://$$REDIS_CACHE";
        bench set-config -g redis_queue "redis://$$REDIS_QUEUE";
        bench set-config -g redis_socketio "redis://$$REDIS_QUEUE";
        bench set-config -gp socketio_port $$SOCKETIO_PORT;
    environment:
      DB_HOST: db
      DB_PORT: "3306"
      REDIS_CACHE: redis-cache:6379
      REDIS_QUEUE: redis-queue:6379
      SOCKETIO_PORT: "9000"
    volumes:
      - sites:/home/frappe/frappe-bench/sites
      - logs:/home/frappe/frappe-bench/logs

  create-site:
    image: frappe/erpnext:v15.45.5
    networks:
      - frappe_network
    deploy:
      restart_policy:
        condition: none
    volumes:
      - sites:/home/frappe/frappe-bench/sites
      - logs:/home/frappe/frappe-bench/logs
    entrypoint:
      - bash
      - -c
    command:
      - >
        wait-for-it -t 120 db:3306;
        wait-for-it -t 120 redis-cache:6379;
        wait-for-it -t 120 redis-queue:6379;
        export start=`date +%s`;
        until [[ -n `grep -hs ^ sites/common_site_config.json | jq -r ".db_host // empty"` ]] && \
          [[ -n `grep -hs ^ sites/common_site_config.json | jq -r ".redis_cache // empty"` ]] && \
          [[ -n `grep -hs ^ sites/common_site_config.json | jq -r ".redis_queue // empty"` ]];
        do
          echo "Waiting for sites/common_site_config.json to be created";
          sleep 5;
          if (( `date +%s`-start > 120 )); then
            echo "could not find sites/common_site_config.json with required keys";
            exit 1
          fi
        done;
        echo "sites/common_site_config.json found";
        bench new-site --mariadb-user-host-login-scope='%' --admin-password=admin --db-root-username=root --db-root-password=admin --install-app erpnext --set-default frappe.docker.local;

  db:
    image: mariadb:10.6
    networks:
      - frappe_network
    healthcheck:
      test: mysqladmin ping -h localhost --password=admin
      interval: 1s
      retries: 20
    deploy:
      restart_policy:
        condition: on-failure
    command:
      - --character-set-server=utf8mb4
      - --collation-server=utf8mb4_unicode_ci
      - --skip-character-set-client-handshake
      - --skip-innodb-read-only-compressed # Temporary fix for MariaDB 10.6
    environment:
      MYSQL_ROOT_PASSWORD: admin
      MARIADB_ROOT_PASSWORD: admin
    volumes:
      - db-data:/var/lib/mysql

  frontend:
    image: frappe/erpnext:v15.45.5
    networks:
      - frappe_network
      - proxy
    labels:
      - "traefik.docker.network=proxy"
      - "traefik.http.routers.frappe.rule=Host(`frappe.docker.local`)"
      - "traefik.http.services.frappe.loadbalancer.server.port=8080"
      - "traefik.http.routers.frappe.entrypoints=http"
    depends_on:
      - websocket
    deploy:
      restart_policy:
        condition: on-failure
    command:
      - nginx-entrypoint.sh
    environment:
      BACKEND: backend:8000
      FRAPPE_SITE_NAME_HEADER: frappe.docker.local
      SOCKETIO: websocket:9000
      UPSTREAM_REAL_IP_ADDRESS: 127.0.0.1
      UPSTREAM_REAL_IP_HEADER: X-Forwarded-For
      UPSTREAM_REAL_IP_RECURSIVE: "off"
      PROXY_READ_TIMEOUT: 120
      CLIENT_MAX_BODY_SIZE: 50m
    volumes:
      - sites:/home/frappe/frappe-bench/sites
      - logs:/home/frappe/frappe-bench/logs

  queue-long:
    image: frappe/erpnext:v15.45.5
    networks:
      - frappe_network
    deploy:
      restart_policy:
        condition: on-failure
    command:
      - bench
      - worker
      - --queue
      - long,default,short
    volumes:
      - sites:/home/frappe/frappe-bench/sites
      - logs:/home/frappe/frappe-bench/logs

  queue-short:
    image: frappe/erpnext:v15.45.5
    networks:
      - frappe_network
    deploy:
      restart_policy:
        condition: on-failure
    command:
      - bench
      - worker
      - --queue
      - short,default
    volumes:
      - sites:/home/frappe/frappe-bench/sites
      - logs:/home/frappe/frappe-bench/logs

  redis-queue:
    image: redis:6.2-alpine
    networks:
      - frappe_network
    deploy:
      restart_policy:
        condition: on-failure
    volumes:
      - redis-queue-data:/data

  redis-cache:
    image: redis:6.2-alpine
    networks:
      - frappe_network
    deploy:
      restart_policy:
        condition: on-failure
    volumes:
      - redis-cache-data:/data

  scheduler:
    image: frappe/erpnext:v15.45.5
    networks:
      - frappe_network
    deploy:
      restart_policy:
        condition: on-failure
    command:
      - bench
      - schedule
    volumes:
      - sites:/home/frappe/frappe-bench/sites
      - logs:/home/frappe/frappe-bench/logs

  websocket:
    image: frappe/erpnext:v15.45.5
    networks:
      - frappe_network
    deploy:
      restart_policy:
        condition: on-failure
    command:
      - node
      - /home/frappe/frappe-bench/apps/frappe/socketio.js
    volumes:
      - sites:/home/frappe/frappe-bench/sites
      - logs:/home/frappe/frappe-bench/logs

volumes:
  db-data:
  redis-queue-data:
  redis-cache-data:
  sites:
  logs:

networks:
  proxy:
    external: true
  frappe_network:
    driver: bridge

Here I have tried configuring Frappe to be hosted at frappe.docker.local. This works well enough that I can load the login screen by going to http://frappe.docker.local. The problem is that once I try to login with “Administrator” + “admin”, I don’t get any errors, I first see “verifying” then I see a page with an E logo and then I just get redirected back to the login page. If I give incorrect login details then I get an error instead.

Any idea what could be wrong? I could not see anything funny in any logs.