diff --git a/Dockerfile b/Dockerfile
index 6502928..21ac8d0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,7 +17,9 @@ ENV LC_CTYPE=en_US.UTF-8
 ENV LANG=en_US.UTF-8
 ENV TERM xterm
 
-# Add the "PHP 7" ppa
+ARG PHP_VERSION=${PHP_VERSION:-70}
+
+# Add the PHP ppa
 RUN apt-get install -y software-properties-common && \
     add-apt-repository -y ppa:ondrej/php
 
@@ -29,7 +31,44 @@ RUN apt-get install -y software-properties-common && \
 
 # Install "PHP Extentions", "libraries", "Software's"
 RUN apt-get update && \
-    apt-get install -y --force-yes \
+    apt-get install -y --allow-downgrades --allow-remove-essential \
+        --allow-change-held-packages \
+        pkg-config \
+        libcurl4-openssl-dev \
+        libedit-dev \
+        libssl-dev \
+        libxml2-dev \
+        xz-utils \
+        libsqlite3-dev \
+        sqlite3 \
+        git \
+        curl \
+        vim \
+        nano \
+        postgresql-client
+
+RUN if [ ${PHP_VERSION} = 56 ]; then \
+    apt-get install -y --allow-downgrades --allow-remove-essential \
+        --allow-change-held-packages \
+        php5.6-cli \
+        php5.6-common \
+        php5.6-curl \
+        php5.6-json \
+        php5.6-xml \
+        php5.6-mbstring \
+        php5.6-mcrypt \
+        php5.6-mysql \
+        php5.6-pgsql \
+        php5.6-sqlite \
+        php5.6-sqlite3 \
+        php5.6-zip \
+        php5.6-bcmath \
+        php5.6-memcached \
+        php5.6-gd \
+        php5.6-dev \
+;elif [ ${PHP_VERSION} = 70 ]; then \
+    apt-get install -y --allow-downgrades --allow-remove-essential \
+        --allow-change-held-packages \
         php7.0-cli \
         php7.0-common \
         php7.0-curl \
@@ -46,20 +85,27 @@ RUN apt-get update && \
         php7.0-memcached \
         php7.0-gd \
         php7.0-dev \
-        pkg-config \
-        libcurl4-openssl-dev \
-        libedit-dev \
-        libssl-dev \
-        libxml2-dev \
-        xz-utils \
-        libsqlite3-dev \
-        sqlite3 \
-        git \
-        curl \
-        vim \
-        nano \
-        postgresql-client \
-    && apt-get clean
+;elif [ ${PHP_VERSION} = 71 ]; then \
+    apt-get install -y --allow-downgrades --allow-remove-essential \
+        --allow-change-held-packages \
+        php7.1-cli \
+        php7.1-common \
+        php7.1-curl \
+        php7.1-json \
+        php7.1-xml \
+        php7.1-mbstring \
+        php7.1-mcrypt \
+        php7.1-mysql \
+        php7.1-pgsql \
+        php7.1-sqlite \
+        php7.1-sqlite3 \
+        php7.1-zip \
+        php7.1-memcached \
+        php7.1-gd \
+        php7.1-dev \
+;fi
+
+RUN apt-get clean
 
 #####################################
 # Composer:
diff --git a/Dockerfile-71 b/Dockerfile-71
deleted file mode 100644
index b0ab29d..0000000
--- a/Dockerfile-71
+++ /dev/null
@@ -1,73 +0,0 @@
-#
-#--------------------------------------------------------------------------
-# Image Setup
-#--------------------------------------------------------------------------
-#
-
-FROM phusion/baseimage:latest
-
-MAINTAINER Mahmoud Zalt <mahmoud@zalt.me>
-
-RUN DEBIAN_FRONTEND=noninteractive
-RUN locale-gen en_US.UTF-8
-
-ENV LANGUAGE=en_US.UTF-8
-ENV LC_ALL=en_US.UTF-8
-ENV LC_CTYPE=en_US.UTF-8
-ENV LANG=en_US.UTF-8
-ENV TERM xterm
-
-# Add the "PHP 7" ppa
-RUN apt-get install -y software-properties-common && \
-    add-apt-repository -y ppa:ondrej/php
-
-#
-#--------------------------------------------------------------------------
-# Software's Installation
-#--------------------------------------------------------------------------
-#
-
-# Install "PHP Extentions", "libraries", "Software's"
-RUN apt-get update && \
-    apt-get install -y --force-yes \
-        php7.1-cli \
-        php7.1-common \
-        php7.1-curl \
-        php7.1-json \
-        php7.1-xml \
-        php7.1-mbstring \
-        php7.1-mcrypt \
-        php7.1-mysql \
-        php7.1-pgsql \
-        php7.1-sqlite \
-        php7.1-sqlite3 \
-        php7.1-zip \
-        php7.1-memcached \
-        php7.1-gd \
-        php7.1-dev \
-        pkg-config \
-        libcurl4-openssl-dev \
-        libedit-dev \
-        libssl-dev \
-        libxml2-dev \
-        xz-utils \
-        libsqlite3-dev \
-        sqlite3 \
-        git \
-        curl \
-        vim \
-        nano \
-        postgresql-client \
-    && apt-get clean
-
-#####################################
-# Composer:
-#####################################
-
-# Install composer and add its bin to the PATH.
-RUN curl -s http://getcomposer.org/installer | php && \
-    echo "export PATH=${PATH}:/var/www/vendor/bin" >> ~/.bashrc && \
-    mv composer.phar /usr/local/bin/composer
-
-# Source the bash
-RUN . ~/.bashrc