pull out phpbrew-base image

Author: c9s

phpbrew-base/Dockerfile

@@ -0,0 +1,28 @@
+FROM ubuntu:18.04
+
+LABEL MAINTAINER "Yo-An Lin <yoanlin93@gmail.com>"
+
+ENV DEBIAN_FRONTEND "noninteractive"
+
+ENV TZ "Asia/Taipei"
+
+RUN apt-get update
+
+RUN apt-get install -y --no-install-recommends \
+ # phpbrew used tools
+ curl wget git ca-certificates \
+ # phpbrew runtime
+ php7.2-cli php7.2-phar php7.2-json php7.2-readline php7.2-bz2 \
+ # timezone data
+ tzdata
+
+# configure timezone
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
+
+# install phpbrew binary
+RUN wget -q -O /usr/bin/phpbrew https://raw.githubusercontent.com/phpbrew/phpbrew/master/phpbrew \
+ && chmod +x /usr/bin/phpbrew
+
+# install base build dependencies for php
+RUN apt-get install  -y --no-install-recommends \
+ build-essential bison autoconf automake autotools-dev re2c

phpbrew/18.04-default/Dockerfile

@@ -1,32 +1,5 @@
-FROM ubuntu:18.04
-
-LABEL MAINTAINER "Yo-An Lin <yoanlin93@gmail.com>"
-
-ENV DEBIAN_FRONTEND "noninteractive"
-
-ENV TZ "Asia/Taipei"
-
-RUN apt-get update
-
-RUN apt-get install -y --no-install-recommends \
- # phpbrew used tools
- curl wget git ca-certificates \
- # phpbrew runtime
- php7.2-cli php7.2-phar php7.2-json php7.2-readline php7.2-bz2 \
- # timezone data
- tzdata
-
-# configure timezone
-RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
-
-# install phpbrew binary
-RUN wget -q -O /usr/bin/phpbrew https://raw.githubusercontent.com/phpbrew/phpbrew/master/phpbrew \
- && chmod +x /usr/bin/phpbrew
-
-# install base build dependencies for php
-RUN apt-get install  -y --no-install-recommends \
- build-essential bison autoconf automake autotools-dev re2c
-
+ARG PHPBREW_BASE_IMAGE
+FROM ${PHPBREW_BASE_IMAGE}
 
 # install extension build dependencies for php
 RUN apt-get install -y --no-install-recommends \