Updated README, removed clang++, since it couldn't be installed on latest stable debian

Author: Michele Adduci

Dockerfile

@@ -4,19 +4,14 @@ LABEL maintainer="[email protected]"
 
 WORKDIR /project
 
-RUN echo "*** Installing gcc (4.9->8) and clang (3.8->6) ***" \
+RUN echo "*** Installing gcc (4.9->8) ***" \
   && DEBIAN_FRONTEND=noninteractive apt-get update \
   && apt-get dist-upgrade -y \
   && echo "deb http://ftp.us.debian.org/debian jessie main contrib non-free" >> /etc/apt/sources.list.d/jessie.list \
   && echo "deb http://ftp.us.debian.org/debian unstable main contrib non-free" >> /etc/apt/sources.list.d/unstable.list \
   && apt-get update \
   && apt-get install -y cmake \
-  && apt-get install -y g++-4.9 g++-5 g++-6 g++-7 g++-8 \
-  && apt-get install -y clang++-3.8 \
-  && apt-get install -y clang++-3.9 \
-  && apt-get install -y clang++-4.0 \
-  && apt-get install -y clang++-5.0 \
-  && apt-get install -y clang++-6.0 \
+  && apt-get install -y g++-4.9 g++-6 g++-7 g++-8 \
   && apt-get autoremove --purge -y \
   && apt-get autoclean -y \
   && rm -rf /var/cache/apt/* /tmp/* \

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2017 Michele Adduci
+Copyright (c) 2017-2019 Michele Adduci
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -2,7 +2,7 @@
 
 [![Build Status](https://travis-ci.org/madduci/docker-linux-cpp.svg?branch=master)](https://travis-ci.org/madduci/docker-linux-cpp)
 
-A basic docker image for C++ developers, featuring g++ (from 4.9 up to 8.x) and clang++ (from 3.8 to 6.0) and CMake support. The default compiler is g++ 8, but you're free to modify the Dockerfile and set your own; as example, if you want to set g++ 4.9 as the default compiler, just write the following Dockerfile and build a new image:
+A basic docker image for C++ developers, featuring g++ (from 4.9 up to 8.x) and CMake support. The default compiler is g++ 8, but you're free to modify the Dockerfile and set your own; as example, if you want to set g++ 4.9 as the default compiler, just write the following Dockerfile and build a new image:
 
 ```
 # Dockerfile
@@ -20,7 +20,11 @@ As default working directory, `/project` is being used, but feel free to change
 
 ## Requirements
 
-* Docker (possibly the latest version, 17.06+)
+* Docker (possibly the latest version)
+
+## Note
+
+Since the Debian repository are changing rapidly, it wasn't possible to add clang directly, as well as g++ 5, which was removed
 
 ## Build/Run instructions