Drupal + lando + pantheon + ssh agent

.lando.local.yml

name: drupal-project
recipe: pantheon
config:
  framework: drupal8
  site: XXXX
  id: XXXX
services:
  appserver:
    run_as_root:
      - chown www-data:www-data /run/host-services/ssh-auth.sock
      - chmod g+w /run/host-services/ssh-auth.sock
    overrides:
      # Pass SSH keys.
      volumes:
        - type: bind
          # https://github.com/lando/lando/issues/478#issuecomment-654634511
          # Linux user: add 'export LANDO_SSH_AUTH_SOCK="${SSH_AUTH_SOCK}"' at the end of your ~/.bashrc:
          # Mac user: MacOS specific path is here as the variable default value, nothing to do.
          source: "${LANDO_SSH_AUTH_SOCK:-/run/host-services/ssh-auth.sock}"
          target: /run/host-services/ssh-auth.sock
      environment:
        SSH_AUTH_SOCK: /run/host-services/ssh-auth.sock
        SIMPLETEST_BASE_URL: "http://http://drupalproject-offering.lndo.site"
        SIMPLETEST_DB: "mysql://pantheon:pantheon@database/pantheon"
        MINK_DRIVER_ARGS_WEBDRIVER: '["chrome", {"browserName":"chrome","chromeOptions":{"args":["--disable-gpu","--headless"]}}, "http://chrome:9515"]'
  chrome:
    type: compose
    services:
      image: drupalci/webdriver-chromedriver:production
      command: chromedriver --log-path=/tmp/chromedriver.log --verbose --whitelisted-ips=
tooling:
  phpunit:
    service: appserver
    cmd: /app/vendor/bin/phpunit -c /app/phpunit.local.xml
  ssh-fix:
    service: appserver
    description: Fix ssh auth sock permission for MacOS users. Lando rebuild fixes the problem as well.
    cmd: "/bin/chgrp www-data /run/host-services/ssh-auth.sock && /bin/chmod g+w /run/host-services/ssh-auth.sock"
    user: root

events:
  post-start:
    - appserver: test -e ~/.ssh/config || printf 'Host *\n  AddKeysToAgent yes\n' > ~/.ssh/config