System-specific env.php values are included in database config snapshot

Question

I have an instance of Magento 2.2.3 on my development server, and my env.php file includes the following:

'system' =>
  array (
    'default' =>
      ...
      'web' =>
      array (
        'unsecure' =>
        array (
          'base_url' => 'https://my.dev.site/',
          'base_link_url' => '{{unsecure_base_url}}',
        ),
        'secure' =>
        array (
          'base_url' => '{{unsecure_base_url}}',
          'base_link_url' => '{{secure_base_url}}',
        ),
        'default' =>
        array (
          'front' => 'cms',
        ),
      ),
...

This env.php file is not versioned. My config.php file is versioned. However, when I run setup:upgrade or app:config:import, all 'system' values in env.php are merged with config.php's values, and stored in system_config_snapshot in the database's flag table.

This causes a 500 Internal Server Error when my colleague on a different server attempts to use her instance of Magento. The base_url in the configuration snapshot does not match her config, so she is forced to upgrade or import; which in turn causes my server to crash since my config no longer matches the snapshot.

My understanding of the env.php file is that it is system-specific, so I'm not sure why this one section of the file ('system') is getting extracted and merged with config.php's values in the database's config snapshot. Does anyone have any ideas?

Answer 1

I have the same issue and It seems related to only this specific override in env.php. I didn't found the underlying issue but a workaround:

1. run setup:upgrade or app:config:import without the base_urls in the env.php that it goes succesfully.
2. put back the base_urls in the env.php
3. run setup:upgrade or app:config:import runs succesfully

What I noticed is that in the table flag, in the row with flag_code = system_config_snapshot, doesn't have the base_url mentioned when it works, it does when it doesn't work.