Example .lando.yml with Platform.sh and Drupal 8 / Gatsby Monorepo

.lando.yml

name: myapp

# Start with the Drupal 8 recipe
recipe: drupal8

# Configure the D8 recipe to match up closer to a vanilla platform.sh stack
config:
  # Lando defaults to Apache. Switch to nginx to match Platform.sh.
  via: nginx
  # Set the webroot to match .platform.app.yaml.
  webroot: drupal/web
  # Set this to match the version in .platform.app.yaml.
  php: 7.3
  # Lando defaults to the latest MySQL release, but Platform.sh uses MariaDB.
  # Specify the version to match what's in services.yaml.
  database: mariadb:10.2

# Loads local environment variables
env_file:
  - drupal/.env

services:
  appserver:
    build:
      # The following build step will install the Platform CLI in the application container
      - "mkdir -p /var/www/.platformsh/bin"
      - "curl -fsSL -o /var/www/.platformsh/bin/platform https://github.com/platformsh/platformsh-cli/releases/download/v3.49.0/platform.phar"
      - "chmod ug+x /var/www/.platformsh/bin/platform"
      # Lando currently ships with composer 1.8, but Drupal 8.8.0 requires composer 1.9
      - "composer self-update"
      - "cd /app/drupal && COMPOSER_PROCESS_TIMEOUT=600 composer install"
    overrides:
      environment:
        PLATFORMSH_PROJECT_ID: "YourProjectID"
        DRUSH_OPTIONS_URI: "https://mycms.lndo.site"

  nodejs:
    type: node
    # Don't waste time checking for an active URL. Isn't active until `lando develop` is run.
    scanner: false
    overrides:
      ports:
        - 8000:8000
      environment:
        GATSBY_WEBPACK_PUBLICPATH: "https://mydev.lndo.site"
    globals:
      gatsby-cli: "latest"
      yarn: "latest"
    run:
      - echo "Installing Gatsby..."
      - cd gatsby && yarn install

proxy:
  appserver_nginx:
    - mycms.lndo.site
  nodejs:
    - mydev.lndo.site:8000

tooling:
  npm:
    service: nodejs
  node:
    service: nodejs
  yarn:
    service: nodejs
  gatsby:
    service: nodejs

  develop:
    service: nodejs
    description: Start Gatsby development server.
    cmd:
      - cd $LANDO_MOUNT/gatsby && gatsby develop --host 0.0.0.0

  # Creates a `lando platform` command that will run any
  # Platform CLI command from inside the container if desired.
  platform:
    service: appserver
    description: Run Platform CLI commands
    cmd: /var/www/.platformsh/bin/platform

  # Custom Tooling
  install:
    description: Install project dependencies
    cmd:
      # Install dependencies
      - appserver: cd /app/drupal && COMPOSER_PROCESS_TIMEOUT=600 composer install

  db-dl:
    service: appserver
    description: Download the latest db from the "develop" environment
    cmd:
      - appserver: cd /app/drupal && /var/www/.platformsh/bin/platform db:dump --gzip --environment=develop --file=db_dump.sql.gz --yes
      - appserver: echo && echo $(echo Downloaded database. Use \"lando db-reset\" to import.)

  db-reset:
    description: Reset the Drupal environment
    cmd:
    - database: cd /app/drupal && /helpers/sql-import.sh $(ls -t *.sql.zip -t *.sql.gz -t *.mysql.gz | head -n1)
    - appserver: cd /app/drupal && /app/drupal/vendor/bin/drush cache:rebuild
    - appserver: cd /app/drupal && /app/drupal/vendor/bin/drush updatedb --yes
    - appserver: cd /app/drupal && /app/drupal/vendor/bin/drush config:import --yes
    - appserver: cd /app/drupal && /app/drupal/vendor/bin/drush config:import --yes
    - appserver: cd /app/drupal && /app/drupal/vendor/bin/drush cache:rebuild
    - appserver: cd /app/drupal && /app/drupal/vendor/bin/drush user:login

  drush-alias:
    description: Downloads Drush aliases for this project
    cmd:
      # Get Drush aliases
      - appserver: /var/www/.platformsh/bin/platform drush-alias

  xdebug-on:
    service: appserver
    description: Enable xdebug for nginx.
    cmd: docker-php-ext-enable xdebug && pkill -o -USR2 php-fpm
    user: root

  xdebug-off:
    service: appserver
    description: Disable xdebug for nginx.
    cmd: rm /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini && pkill -o -USR2 php-fpm
    user: root

# Excludes rarely edited directories / files from sync to win performance.
# Copy and uncomment this "excludes" section into a .lando.local.yml file in
# the project root to gain all the benefits.
#
# excludes:
#   - drupal/drush
#   - drupal/vendor
#   - drupal/web/core
#   - drupal/web/modules/contrib
#   - drupal/web/profiles/contrib
#   - drupal/web/sites/default/files
#   - drupal/web/themes/contrib

# If you would like to generally exclude a specific directory but want host
# access to a specific subdirectory, such as when debugging a contrib module,
# you may add that path to the list of excludes with a preceding exclamation
# point. The example excludes definition below excludes Drupal's contrib
# modules from syncing, but will sync the webform module directory.
#
# excludes:
#   - drupal/web/modules/contrib
#   - "!drupal/web/modules/contrib/webform"
#
# *Wrap it in quotes so the yaml validates.