anchor.diff:  # --build-arg timezone=Asia/Shanghai
   ARG timezone
   # app env: prod pre test dev
  -ARG app_env=prod
  +ARG app_env=test
   # default use www-data user
   ARG work_user=www-data
   
  -ENV APP_ENV=${app_env:-"prod"} \
  +# default APP_ENV = test
  +ENV APP_ENV=${app_env:-"test"} \
       TIMEZONE=${timezone:-"Asia/Shanghai"} \
       PHPREDIS_VERSION=5.1.0 \
       SWOOLE_VERSION=4.4.17 \
  
positive.code: # Libs -y --no-install-recommends
  RUN apt-get update \
      && apt-get install -y \
          curl wget git zip unzip less vim procps lsof tcpdump htop openssl \
          libz-dev \
          libssl-dev \
          libnghttp2-dev \
  
negative.code:         libfreetype6-dev \
  # Install PHP extensions
      && docker-php-ext-install \
         bcmath gd pdo_mysql mbstring sockets zip sysvmsg sysvsem sysvshm \
  # Clean apt cache
      && rm -rf /var/lib/apt/lists/*
  
  # Install composer
  Run curl -sS https://getcomposer.org/installer | php \
  