From 6100a046c570ab3431c4aba7ff9e16732a4a42c3 Mon Sep 17 00:00:00 2001
From: sc0Vu <alk03073135@gmail.com>
Date: Sat, 14 Apr 2018 15:01:45 +0800
Subject: [PATCH] Update 'README.md'

---
 README.md | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/README.md b/README.md
index ee8ecc4..707afc8 100644
--- a/README.md
+++ b/README.md
@@ -246,6 +246,29 @@ docker-compose exec php ash
 vendor/bin/phpunit
 ```
 
+###### Install packages
+Enter container first
+```
+docker-compose exec php ash
+```
+
+1. gmp
+```
+apk add gmp-dev
+docker-php-ext-install gmp
+```
+
+2. bcmath
+```
+docker-php-ext-install bcmath
+```
+
+###### Remove extension
+Move the extension config from `/usr/local/etc/php/conf.d/`
+```
+mv /usr/local/etc/php/conf.d/extension-config-name to/directory
+```
+
 # API
 
 Todo.