PHP Errors Thrown on Fresh Docker Image Pull

[joshmans]

I just did a fresh image pull of 5.4.0 (using the "latest" tag) and I'm getting PHP errors thrown on the page before even trying to log into anything.

Warning: session_start(): open(/tmp/sess_a9fe024cfb08146120542e4425cbea54, O_RDWR) failed: Permission denied (13) in /var/www/html/adminer.php on line 202

Warning: session_start(): Failed to read session data: files (path: ) in /var/www/html/adminer.php on line 202

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/adminer.php:202) in /var/www/html/adminer.php on line 56

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/adminer.php:202) in /var/www/html/adminer.php on line 1390

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/adminer.php:202) in /var/www/html/adminer.php on line 1390

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/adminer.php:202) in /var/www/html/adminer.php on line 1390

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/adminer.php:202) in /var/www/html/adminer.php on line 1390

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/adminer.php:202) in /var/www/html/adminer.php on line 1390

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/adminer.php:202) in /var/www/html/adminer.php on line 1390

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/adminer.php:202) in /var/www/html/adminer.php on line 1391

[TimWolla]

Warning: session_start(): open(/tmp/sess_a9fe024cfb08146120542e4425cbea54, O_RDWR) failed: Permission denied (13) in /var/www/html/adminer.php on line 202

Apparently the temporary directory of the container isn't writable. Are you doing something “special” (any extra flags or so)?

In any case, this very likely isn't a bug in this image.