Divi Development Environment

docker-compose.yml

version: '3.3'

services:

  mariadb:
    image: 'mariadb:10.2.14'
    environment:
      MYSQL_ROOT_PASSWORD: password
      MYSQL_DATABASE: wordpress
      DATADIR: /data
    restart: on-failure
    volumes:
      - 'database:/data'
    network_mode: 'service:wordpress'

  wordpress:
    image: 'elegantthemes/divi-dev'
    hostname: divi-dev
    volumes:
      - '${PWD}:/workspace/wordpress'
    ports:
      - '80:80'     # nginx
      - '3306:3306' # mariadb
      - '3000:3000' # webpack hmr

volumes:
  database: {}

This is giving an error: yaml.scanner.ScannerError: while scanning for the next token
found character '\t' that cannot start any token
in "./docker-compose.yml", line 6, column 1