diff --git a/php7/Dockerfile b/php7/Dockerfile
index 248ed11fe..f1377402c 100644
--- a/php7/Dockerfile
+++ b/php7/Dockerfile
@@ -1,57 +1,14 @@
-FROM ubuntu:16.04
-MAINTAINER DevOps "devops@lablup.com"
-
-# Add an isolated user
-# /home/work: actual working directory for user codes
-# /home/sorna: place for Python and REPL script
-RUN adduser --disabled-password --gecos "" work
-RUN chmod 700 /home/work
-RUN mkdir /home/sorna
-RUN chmod 755 /home/sorna
-RUN chown -R work:work /home/sorna
-
-ENV DEBIAN_FRONTEND noninteractive
-ENV HOME /home/work
-WORKDIR /home/work
-
-# Set up the base environment.
-USER root
-RUN sed -i 's/archive\.ubuntu\.com/kr.archive.ubuntu.com/' /etc/apt/sources.list
-RUN echo 'APT::Install-Recommends "false";' >> /etc/apt/apt.conf; \
-    echo 'APT::Install-Suggests "false";' >> /etc/apt/apt.conf
-RUN apt-get update
-RUN apt-get install -y --only-upgrade tzdata
-RUN apt-get install -y build-essential git-core curl wget ca-certificates libseccomp2 libzmq3-dev
-CMD /home/sorna/run.sh
+FROM lablup/kernel-base:latest
 
 # Install PHP 7.0
-RUN apt-get install -y language-pack-en-base python-software-properties software-properties-common
-ENV LC_ALL=en_US.UTF-8
-RUN apt-get install -y php7.0-cli php7.0-gd php7.0-sqlite3 php7.0-dev php-pear
-RUN apt-get install -y pkg-config libzmq3-dev
-RUN echo '' | pecl install zmq-beta
-RUN echo 'extension=zmq.so' > /etc/php/7.0/cli/conf.d/20-zmq.ini
-
-# Secure installation scripts
-USER root
-ADD run.sh /home/sorna/run.sh
-ADD jail /home/sorna/jail
-ADD intra-jail /home/sorna/intra-jail
-RUN chown root:root /home/sorna/*.sh /home/sorna/jail /home/sorna/intra-jail
-RUN chmod 600 /home/sorna/*.sh
-RUN chmod 755 /home/sorna/run.sh /home/sorna/jail /home/sorna/intra-jail
-ADD patch-libs.so /home/sorna/patch-libs.so
-ENV LD_PRELOAD /home/sorna/patch-libs.so
-
-VOLUME ["/home/work"]
-EXPOSE 2000 2001
-
-LABEL io.sorna.timeout="10"
-LABEL io.sorna.maxmem="128m"
-LABEL io.sorna.maxcores="1"
-LABEL io.sorna.mode="query"
-LABEL io.sorna.envs.corecount="OPENBLAS_NUM_THREADS,NPROC"
-LABEL io.sorna.version="2"
+RUN apk add --no-cache --virtual .build-deps build-base zeromq-dev pkgconf autoconf automake \
+    && apk add --no-cache php7 php7-dev php7-xml php7-pcntl php7-pear zeromq php7-iconv php7-zlib php7-json php7-gd php7-sqlite3 \
+    # PECL patch (ref: http://stackoverflow.com/questions/40999752)
+    && sed -i "$ s|\-n||g" /usr/bin/pecl \
+    && echo '' | pecl install zmq-beta \
+    && echo 'extension=zmq.so' >> /etc/php7/php.ini \
+    && apk del .build-deps
 
 ADD run.php /home/sorna/run.php
 USER work
+CMD ["/home/sorna/jail", "default", "/usr/bin/php7", "/home/sorna/run.php"]