Added g++ 8

Author: madduci

Dockerfile

@@ -4,14 +4,14 @@ LABEL maintainer="[email protected]"
 
 WORKDIR /project
 
-RUN echo "*** Installing gcc (4.9->7) and clang (3.8->6) ***" \
+RUN echo "*** Installing gcc (4.9->8) and clang (3.8->6) ***" \
   && 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 \
+  && 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 \
@@ -20,7 +20,7 @@ RUN echo "*** Installing gcc (4.9->7) and clang (3.8->6) ***" \
   && apt-get autoremove --purge -y \
   && apt-get autoclean -y \
   && rm -rf /var/cache/apt/* /tmp/* \
-  && echo "Setting g++ 7 as default compiler" \
-  && update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-7 1
+  && echo "Setting g++ 8 as default compiler" \
+  && update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-8 1
 
 ENTRYPOINT [ "/usr/bin/g++" ]