update 1.8

Dockerfile

@@ -0,0 +1,11 @@
+FROM composer:1.8
+
+LABEL maintainer="84hero <[email protected]>"
+
+RUN composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/ && \
+	composer global require hirak/prestissimo && \
+	composer clearcache
+
+WORKDIR /app 
+
+CMD [ "composer" ]

README.md

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+# FROM composer:1.8
+
+Composer 中国加速镜像 默认从阿里云更新
+
+# Example 
+
+- composer install
+
+```
+
+docker run --rm -v $(pwd):/app composer composer install
+
+```
+
+
+- Run by specified version
+
+```
+
+docker run --rm -v $(pwd):/app composer:1.9 composer install
+
+OR 
+
+docker run --rm -v $(pwd):/app composer:1.8 composer install
+
+
+```
+
+