fix php-fpm executable

Author: andypost

docker/docker-compose.override.yml.default

@@ -31,7 +31,7 @@ services:
 #      - mysql
 #      - postgresql
 # Catch code assertions "development" mode. https://www.php.net/manual/en/function.assert.php
-    command: php-fpm7 -F -d zend.assertions=1
+    command: php-fpm81 -F -d zend.assertions=1
 # Uncomment next line if you need PHP XDebug.
 #    command: php-fpm81 -F -dzend.assertions=1 -dzend_extension=xdebug.so
 #    command: php-fpm81 -F -dzend.assertions=1 -dopcache.jit_buffer_size=20M