feature symfony#58564 [HttpKernel] Let Monolog handle the creation of log folder for improved readonly containers handling (shyim)

This PR was merged into the 7.3 branch.

Discussion
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[HttpKernel] Let Monolog handle the creation of log folder for improved readonly containers handling

| Q             | A
| ------------- | ---
| Branch?       | 7.2
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Issues        |
| License       | MIT

When running Symfony in a Container in readonly mode. Symfony checks if the var/log is writeable and it's not because of readonly FS.

I can set env `APP_LOG_DIR=/tmp/log`, to fix the issue. But this folder will be never used as my monolog only outputs to stdout.

Therefore I would suggest removing this completely and let monolog create the folder, only when the user configuration wants this

Commits
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c79d340 [HttpKernel] Let Monolog create the log folder

Author: fabpot

src/Symfony/Component/HttpKernel/Kernel.php

@@ -594,7 +594,7 @@ protected function getKernelParameters(): array
      */
     protected function buildContainer(): ContainerBuilder
     {
-        foreach (['cache' => $this->getCacheDir(), 'build' => $this->warmupDir ?: $this->getBuildDir(), 'logs' => $this->getLogDir()] as $name => $dir) {
+        foreach (['cache' => $this->getCacheDir(), 'build' => $this->warmupDir ?: $this->getBuildDir()] as $name => $dir) {
             if (!is_dir($dir)) {
                 if (false === @mkdir($dir, 0777, true) && !is_dir($dir)) {
                     throw new \RuntimeException(\sprintf('Unable to create the "%s" directory (%s).', $name, $dir));