Add docker file for php testing. (#5447)

kokoro/linux/dockerfile/push_testing_images.sh

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+#!/bin/bash
+
+set -ex
+
+cd $(dirname $0)/../../..
+git_root=$(pwd)
+cd -
+
+DOCKERHUB_ORGANIZATION=protobuf
+
+for DOCKERFILE_DIR in test/*
+do
+  # Generate image name based on Dockerfile checksum. That works well as long
+  # as can count on dockerfiles being written in a way that changing the logical
+  # contents of the docker image always changes the SHA (e.g. using "ADD file"
+  # cmd in the dockerfile in not ok as contents of the added file will not be
+  # reflected in the SHA).
+  DOCKER_IMAGE_NAME=$(basename $DOCKERFILE_DIR)_$(sha1sum $DOCKERFILE_DIR/Dockerfile | cut -f1 -d\ )
+
+  echo $DOCKER_IMAGE_NAME
+  # skip the image if it already exists in the repo
+  curl --silent -f -lSL https://registry.hub.docker.com/v2/repositories/${DOCKERHUB_ORGANIZATION}/${DOCKER_IMAGE_NAME}/tags/latest > /dev/null \
+      && continue
+
+  docker build -t ${DOCKERHUB_ORGANIZATION}/${DOCKER_IMAGE_NAME} ${DOCKERFILE_DIR}
+
+  # "docker login" needs to be run in advance
+  docker push ${DOCKERHUB_ORGANIZATION}/${DOCKER_IMAGE_NAME}
+done

kokoro/linux/dockerfile/test/php/Dockerfile

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+FROM debian:stretch
+
+# Install dependencies.  We start with the basic ones require to build protoc
+# and the C++ build
+RUN apt-get clean && apt-get update && apt-get install -y --force-yes \
+  autoconf \
+  autotools-dev \
+  build-essential \
+  bzip2 \
+  ccache \
+  curl \
+  gcc \
+  git \
+  libc6 \
+  libc6-dbg \
+  libc6-dev \
+  libgtest-dev \
+  libtool \
+  make \
+  parallel \
+  time \
+  wget \
+  && apt-get clean
+
+# Install php dependencies
+RUN apt-get clean && apt-get update && apt-get install -y --force-yes \
+  php \
+  libxml2-dev \
+  && apt-get clean
+
+# Install other dependencies
+RUN ln -sf /usr/include/x86_64-linux-gnu/gmp.h /usr/include/gmp.h
+RUN wget http://ftp.gnu.org/gnu/bison/bison-2.6.4.tar.gz -O /var/local/bison-2.6.4.tar.gz
+RUN cd /var/local \
+  && tar -zxvf bison-2.6.4.tar.gz \
+  && cd /var/local/bison-2.6.4 \
+  && ./configure \
+  && make \
+  && make install
+
+# Install composer
+RUN curl -sS https://getcomposer.org/installer | php
+RUN mv composer.phar /usr/local/bin/composer
+
+# Download php source code
+RUN git clone https://github.com/php/php-src
+
+# php 5.5
+RUN cd php-src \
+  && git checkout PHP-5.5.38 \
+  && ./buildconf --force
+RUN cd php-src \
+  && ./configure --enable-bcmath --prefix=/usr/local/php-5.5 \
+  && make \
+  && make install \
+  && make clean
+RUN cd php-src \
+  && ./configure --enable-maintainer-zts --prefix=/usr/local/php-5.5-zts \
+  && make \
+  && make install \
+  && make clean
+
+RUN wget -O phpunit https://phar.phpunit.de/phpunit-4.phar \
+  && chmod +x phpunit \
+  && cp phpunit /usr/local/php-5.5 \
+  && mv phpunit /usr/local/php-5.5-zts
+
+# php 5.6
+RUN cd php-src \
+  && git checkout PHP-5.6.39 \
+  && ./buildconf --force
+RUN cd php-src \
+  && ./configure --enable-bcmath --prefix=/usr/local/php-5.6 \
+  && make \
+  && make install \
+  && make clean
+RUN cd php-src \
+  && ./configure --enable-maintainer-zts --prefix=/usr/local/php-5.6-zts \
+  && make \
+  && make install \
+  && make clean
+
+RUN wget -O phpunit https://phar.phpunit.de/phpunit-5.phar \
+  && chmod +x phpunit \
+  && cp phpunit /usr/local/php-5.6 \
+  && mv phpunit /usr/local/php-5.6-zts
+
+# php 7.0
+RUN cd php-src \
+  && git checkout PHP-7.0.33 \
+  && ./buildconf --force
+RUN cd php-src \
+  && ./configure --enable-bcmath --prefix=/usr/local/php-7.0 \
+  && make \
+  && make install \
+  && make clean
+RUN cd php-src \
+  && ./configure --enable-maintainer-zts --prefix=/usr/local/php-7.0-zts \
+  && make \
+  && make install \
+  && make clean
+
+RUN wget -O phpunit https://phar.phpunit.de/phpunit-6.phar \
+  && chmod +x phpunit \
+  && cp phpunit /usr/local/php-7.0 \
+  && mv phpunit /usr/local/php-7.0-zts
+
+# php 7.1
+RUN cd php-src \
+  && git checkout PHP-7.1.25 \
+  && ./buildconf --force
+RUN cd php-src \
+  && ./configure --enable-bcmath --prefix=/usr/local/php-7.1 \
+  && make \
+  && make install \
+  && make clean
+RUN cd php-src \
+  && ./configure --enable-maintainer-zts --prefix=/usr/local/php-7.1-zts \
+  && make \
+  && make install \
+  && make clean
+
+RUN wget -O phpunit https://phar.phpunit.de/phpunit-7.phar \
+  && chmod +x phpunit \
+  && cp phpunit /usr/local/php-7.1 \
+  && mv phpunit /usr/local/php-7.1-zts
+
+# php 7.2
+RUN cd php-src \
+  && git checkout PHP-7.2.13 \
+  && ./buildconf --force
+RUN cd php-src \
+  && ./configure --enable-bcmath --prefix=/usr/local/php-7.2 \
+  && make \
+  && make install \
+  && make clean
+RUN cd php-src \
+  && ./configure --enable-maintainer-zts --prefix=/usr/local/php-7.2-zts \
+  && make \
+  && make install \
+  && make clean
+
+RUN wget -O phpunit https://phar.phpunit.de/phpunit-7.phar \
+  && chmod +x phpunit \
+  && cp phpunit /usr/local/php-7.2 \
+  && mv phpunit /usr/local/php-7.2-zts
+
+# php 7.3
+RUN cd php-src \
+  && git checkout PHP-7.3.0 \
+  && ./buildconf --force
+RUN cd php-src \
+  && ./configure --enable-bcmath --prefix=/usr/local/php-7.3 \
+  && make \
+  && make install \
+  && make clean
+RUN cd php-src \
+  && ./configure --enable-maintainer-zts --prefix=/usr/local/php-7.3-zts \
+  && make \
+  && make install \
+  && make clean
+
+RUN wget -O phpunit https://phar.phpunit.de/phpunit-7.phar \
+  && chmod +x phpunit \
+  && cp phpunit /usr/local/php-7.3 \
+  && mv phpunit /usr/local/php-7.3-zts