%kernel.project_dir% in docker/php/env gives an error

[harmtemolder]

Running docker-compose run --rm php composer install after copying docker/php/env.example to env (as described here) and leaving it with its default values results in this error:

In Inline.php line 310:
                                                                                                                                       
  The reserved indicator "%" cannot start a plain scalar; you need to quote the scalar at line 9 (near "database_path: %kernel.projec  
  t_dir%/data/db/wallabag.sqlite").

When I change DATABASE_PATH to the absolute path to the same folder, it succeeds.

But then the next command, docker-compose run --rm php bin/console wallabag:install, fails with:

Database connection       ERROR!   Can't connect to the database: An exception occurred in driver: SQLSTATE[HY000] [14] unable to open database file

What am I doing wrong?

[harmtemolder]

I have found #5790 but I don't think it's the same issue. I will try another database driver though, see if I at least can get it to work.

[nicosomb]

I will try another database driver though, see if I at least can get it to work.

@harmtemolder do you have more details about your problem?

[lifepillar]

Does enclosing the value in double quotes fix the problem?

database_path: "%kernel.project_dir%/data/db/wallabag.sqlite"