Update README.md

Author: phpstatic

README.md

@@ -58,8 +58,8 @@ Linux package need CPU support AVX.
 run this on your project dirs:
 
 ```sh
-docker pull phpstatic/php:7.4.13
-docker run --name php74 -itd -v $(pwd):/app --mount source=php74_etc,target=/usr/local/etc/php phpstatic/php:7.4.13
+docker pull phpstatic/php:7.4.15
+docker run --name php74 -itd -v $(pwd):/app --mount source=php74_etc,target=/usr/local/etc/php phpstatic/php:7.4.15
 docker logs php74
 docker volume inspect php74_etc
 docker exec -i -t php74 composer install
@@ -198,6 +198,7 @@ fileinfo
 filter
 ftp
 gd
+gettext
 gmp
 grpc
 hash