Shrink docker image

Dockerfile

@@ -4,12 +4,12 @@
 # Requires 1GB of free disk space
 #
 # Build docker image with:
-# $ docker build -t r2docker .
+# $ docker build -t r2docker:latest .
 #
 # Run the docker image:
 # $ docker images
-# $ export DOCKER_IMAGE_ID= docker images | awk '{print $3}'|head -n2 | tail -n1`
-# $ docker run -ti ${DOCKER_IMAGE_ID} bash
+# $ export DOCKER_IMAGE_ID=$(docker images --format '{{.ID}}' -f 'label=r2docker')
+# $ docker run -ti --cap-drop=ALL r2docker:latest
 #
 # Once you quit the bash session get the container id with:
 # $ docker ps -a | grep bash
@@ -22,66 +22,78 @@
 # $ xz -d < container.xz | docker import -
 #
 #
-# If you willing to debug a program within Docker, you should run it in privileged mode:
+# If you willing to debug a program within Docker, you should run it with CAP_SYS_PTRACE:
 #
-# $ docker run -it --privileged radare/radare2
+# $ docker run -it --cap-drop=ALL --cap-add=SYS_PTRACE r2docker:latest
 # $ r2 -d /bin/true
 #
 
-# using phusion/baseimage as base image. 
-# FROM ubuntu
-FROM phusion/baseimage
+# Using debian 8 as base image.
+FROM debian:8
 
-# Set correct environment variables.
-ENV HOME /root
+# Label base
+LABEL r2docker latest
 
-# Regenerate SSH host keys. baseimage-docker does not contain any
-# RUN /etc/my_init.d/00_regen_ssh_host_keys.sh
+# Radare version
+ENV R2_VERSION master
+# R2pipe python version
+ENV R2_PIPE_PY_VERSION 0.8.9
+# R2pipe node version
+ENV R2_PIPE_NPM_VERSION 2.3.2
 
-# Use baseimage-docker's init system.
-CMD ["/bin/bash"]
+# Build radare2 in a volume to minimize space used by build
+VOLUME ["/mnt"]
 
-# create code directory
-RUN mkdir -p /opt/code/
-# install packages required to compile vala and radare2
-RUN apt-get update
-RUN apt-get upgrade -y
-RUN apt-get install -y software-properties-common wget python curl valgrind
-RUN apt-get install -y gcc git bison pkg-config make glib-2.0 unzip sudo
-#RUN apt-get install -y swig flex bison git gcc g++ make pkg-config glib-2.0
-#RUN apt-get install -y swig flex bison git gcc g++ make pkg-config glib-2.0
-#RUN apt-get install -y python-gobject-dev valgrind gdb
+# Install all build dependencies
+# Install bindings
+# Build and install radare2 on master branch
+# Remove all build dependencies
+# Cleanup
+RUN DEBIAN_FRONTEND=noninteractive dpkg --add-architecture i386 && \
+  apt-get update && \
+  apt-get install -y \
+  curl \
+  gcc \
+  git \
+  bison \
+  pkg-config \
+  make \
+  glib-2.0 \
+  libc6:i386 \
+  libncurses5:i386 \
+  libstdc++6:i386 \
+  sudo && \
+  curl -sL https://deb.nodesource.com/setup_7.x | bash - && \
+  apt-get install -y nodejs python-pip && \
+  curl -sL https://www.npmjs.com/install.sh | bash - && \
+  pip install r2pipe=="$R2_PIPE_PY_VERSION" && \
+  npm install -g "r2pipe@$R2_PIPE_NPM_VERSION" && \
+  cd /mnt && \
+  git clone -b "$R2_VERSION" --depth 1 https://github.com/radare/radare2.git && \
+  cd radare2 && \
+  ./sys/install.sh && \
+  make install && \
+  apt-get remove --purge -y \
+  curl \
+  gcc \
+  git \
+  bison \
+  pkg-config \
+  make \
+  python-pip \
+  glib-2.0 && \
+  apt-get autoremove --purge -y && \
+  apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-#ENV VALA_TAR vala-0.32.1
+# Create non-root user
+RUN useradd -m r2 && \
+  adduser r2 sudo && \
+  echo "r2:r2" | chpasswd
 
-# compile vala
-#RUN cd /opt/code && \
-##	wget -c https://download.gnome.org/sources/vala/0.32/${VALA_TAR}.tar.xz && \
-#	shasum ${VALA_TAR}.tar.xz | grep -q 0839891fa02ed2c96f0fa704ecff492ff9a9cd24 && \
-#	tar -Jxf ${VALA_TAR}.tar.xz
-#RUN cd /opt/code/${VALA_TAR}; ./configure --prefix=/usr ; make && make install
-# compile radare and bindings
-
-# Python
-RUN apt-get install -y python-pip ; pip install r2pipe
-
-# NodeJS
-RUN curl -sL https://deb.nodesource.com/setup_7.x | bash - ; apt-get install -y nodejs
-
-# Clean up APT when done.
-RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
-# build and install r2
-RUN cd /opt/code ; git clone --depth 1 https://github.com/radare/radare2.git; cd radare2; ./sys/install.sh
-RUN cd /opt/code/radare2 ; make symstall
-
-RUN npm install -g r2pipe
-
-RUN useradd -m r2
-RUN adduser r2 sudo
-RUN (echo r2;echo r2) | passwd r2
+# Initilise base user
 USER r2
 WORKDIR /home/r2
-ENV HOME=/home/r2
+ENV HOME /home/r2
 
-RUN r2 -V
+# Base command for container
+CMD ["/bin/bash"]