Redash docker install Synology

.env

PYTHONUNBUFFERED=0
REDASH_LOG_LEVEL=INFO
REDASH_REDIS_URL=redis://redis:6379/0
# generate a password at https://www.pwdgen.org/
# use a different one for each of the next 3 lines
POSTGRES_PASSWORD=xxxxxx
REDASH_COOKIE_SECRET=-yyyyyy
REDASH_SECRET_KEY=-zzzzz
# replace the xxxxxx with the password generated for line 6 
REDASH_DATABASE_URL=postgresql://postgres:xxxxxx@postgres/postgres

docker-compose.yml

# create this file in a folder
# in my case in /volume1/docker/redash
# also create /volume1/docker/redash/postgres-data

version: '2'
x-redash-service: &redash-service
  # check https://github.com/getredash/redash/releases for new versions and image tags
  image: redash/redash:8.0.0.b32245
  depends_on:
    - postgres
    - redis
  # the .env file is located at this location on my Synology
  # change if needed and see second env_file reference further below
  env_file: /volume1/docker/redash/.env
  restart: always
  # you'l need to create this folder to be able to use the volume
  # it enabled me to refence the /data folder from within redash as source for sqlite db
  volumes:
      - /volume1/docker/redash/data:/data  
services:
  server:
    <<: *redash-service
    command: server
    # port 5000 was already in use on my Synology
    ports:
      - "5010:5000"
    environment:
      REDASH_WEB_WORKERS: 4
  scheduler:
    <<: *redash-service
    command: scheduler
    environment:
      QUEUES: "celery"
      WORKERS_COUNT: 1
  scheduled_worker:
    <<: *redash-service
    command: worker
    environment:
      QUEUES: "scheduled_queries,schemas"
      WORKERS_COUNT: 1
  adhoc_worker:
    <<: *redash-service
    command: worker
    environment:
      QUEUES: "queries"
      WORKERS_COUNT: 2
  redis:
    image: redis:5.0-alpine
    restart: always
  postgres:
    image: postgres:9.5-alpine
    # change to correct location
    env_file: /volume1/docker/redash/.env
    volumes:
      - /volume1/docker/redash/postgres-data:/var/lib/postgresql/data
    restart: always
  nginx:
    image: redash/nginx:latest
    ports:
      - "8090:80"
    depends_on:
      - server
    links:
      - server:redash
    restart: always