fix: Allow using cache when running in Docker distribution

[Wirone]

Fixes #7768.

---

docker build --target dist -t fixer:local .
docker run --rm -it -v $(pwd):/code --entrypoint="" fixer:local sh

/code # php-cs-fixer check
PHP CS Fixer 3.48.1-DEV Small Changes by Fabien Potencier, Dariusz Ruminski and contributors.
PHP runtime: 8.3.2
Loaded config default from "/code/.php-cs-fixer.php".
 1070/1070 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%


Found 0 of 1070 files that can be fixed in 40.647 seconds, 26.000 MB memory used

/code # php-cs-fixer check
PHP CS Fixer 3.48.1-DEV Small Changes by Fabien Potencier, Dariusz Ruminski and contributors.
PHP runtime: 8.3.2
Loaded config default from "/code/.php-cs-fixer.php".
Using cache file "/code/.php-cs-fixer.cache.json".
 1070/1070 [▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓] 100%


Found 0 of 1070 files that can be fixed in 0.136 seconds, 16.000 MB memory used

Second run inside Docker container uses cache.

[coveralls]

coverage: 94.749% (-0.003%) from 94.752%
when pulling 8820d70 on Wirone:codito/cache-in-docker
into 156192d on PHP-CS-Fixer:master.