Why is Symphony (or Docker?) user called 82?

Question

symfony

When deploying a site to Symphony via Docker, I encountered an error:
"The stream or file "/var/www/site.ru/var/log/dev.log" could not be opened in append mode: failed to open stream: Permission denied" .

Symphony could not create a log even though the folder is owned by the user under which Docker is running.

After adding execute permission for bin/console chmod +x bin/console. And deleting the var folder, it turned out that Symphony (or Docker?) was trying to create a file under user 82 with group 82, which, of course, is not included in the desired group.

Who is this user? Is this the result of a misconfiguration of Docker? Or is that how it should be?

Answer 1

This is the space of the system, symphony has nothing to do with it)
82 is the www-data user ID in alpine.