php-fpm implement CHANGE_SOURCE

WIP laradock#2238

Author: xiagw

php-fpm/Dockerfile

@@ -23,6 +23,12 @@ ARG LARADOCK_PHP_VERSION
 # Set Environment Variables
 ENV DEBIAN_FRONTEND noninteractive
 
+ARG CHANGE_SOURCE=false
+RUN if [ ${CHANGE_SOURCE} = true ]; then \
+    # Change application source from deb.debian.org to aliyun source
+    sed -i 's/deb.debian.org/mirrors.aliyun.com/' /etc/apt/sources.list \
+;fi
+
 # always run apt update when start and after add new source list, then clean up at end.
 RUN set -xe; \
     apt-get update -yqq && \