Add documentation to README.md

Signed-off-by: Petr "Stone" Hracek <phracek@redhat.com>

8.0/README.md

@@ -222,6 +222,10 @@ You can also override the entire directory used to load the PHP configuration by
 * **PHP_INI_SCAN_DIR**
  * Path to scan for additional ini configuration files
 
+You can also override PHP configuration for FPM workers:
+* **PHP_CLEAR_ENV**
+ * Sets to clear environment in FPM workers. See [FPM_CONFIGURATION](https://www.php.net/manual/en/install.fpm.configuration.php).
+
 You can override the Apache [MPM prefork](https://httpd.apache.org/docs/2.4/mod/mpm_common.html)
 settings to increase the performance for of the PHP application. In case you set
 some Cgroup limits, the image will attempt to automatically set the

8.1/README.md

@@ -222,6 +222,10 @@ You can also override the entire directory used to load the PHP configuration by
 * **PHP_INI_SCAN_DIR**
  * Path to scan for additional ini configuration files
 
+You can also override PHP configuration for FPM workers:
+* **PHP_CLEAR_ENV**
+ * Sets to clear environment in FPM workers. See [FPM_CONFIGURATION](https://www.php.net/manual/en/install.fpm.configuration.php).
+
 You can override the Apache [MPM prefork](https://httpd.apache.org/docs/2.4/mod/mpm_common.html)
 settings to increase the performance for of the PHP application. In case you set
 some Cgroup limits, the image will attempt to automatically set the

test/run

@@ -168,6 +168,7 @@ test_clear_env_setup() {
  info "Checking if clear_env = yes is set in /etc/php-fpm.d/www.conf file."
  docker run --rm "${IMAGE_NAME}-testapp" /bin/bash -c "${run_cmd}"
 }
+
 test_clear_env() {
  CLEAR_ENV=true test_application
 }