diff --git a/docker/Dockerfile b/docker/Dockerfile
index 8e8094e..2023fd3 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -20,18 +20,29 @@
 # Author: Ricardo Martins                                                 #
 ###########################################################################
 
-FROM debian:9
+FROM debian:8
 
 MAINTAINER Ricardo Martins <rasm@oceanscan-mst.com>
 
 ENV DEBIAN_FRONTEND noninteractive
 
 # Update distro.
+RUN echo "deb http://ftp.us.debian.org/debian testing non-free contrib" >> /etc/apt/sources.list
+RUN echo "deb http://mirrors.fe.up.pt/ubuntu xenial main restricted universe multiverse" >> /etc/apt/sources.list
+RUN echo "deb http://mirrors.fe.up.pt/ubuntu xenial-updates main restricted universe multiverse" >> /etc/apt/sources.list
+RUN echo "deb http://mirrors.fe.up.pt/ubuntu xenial-backports main restricted universe multiverse" >> /etc/apt/sources.list
+RUN apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 3B4FE6ACC0B21F32
 RUN apt-get update -y
 RUN apt-get dist-upgrade -y
+RUN apt-get install -y g++-5
+RUN apt-get install -y gcc-5
 RUN apt-get install -y wget
 RUN apt-get install -y bzip2
 RUN apt-get install -y git
 RUN apt-get install -y g++-multilib
-RUN apt-get install -y cmake
 RUN apt-get install -y file
+RUN apt-get install -y vim
+RUN apt-get install -y nasm
+RUN apt-get install -y build-essential
+RUN apt-get install -y make
+RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 60 --slave /usr/bin/g++ g++ /usr/bin/g++-5