TruffleRuby: install TruffleRuby, a couple of dependencies and patch …

…missing security related SO libraries, in the docker image

docker-images/Dockerfile

@@ -28,7 +28,7 @@ RUN echo; echo " --- Download & install 'espresso' using gu"; gu install espress
 RUN echo; echo " --- Download & install 'nodejs' using gu"; gu install nodejs; echo
 RUN echo; echo " --- Download & install 'python' using gu"; gu install python; echo
 RUN echo; echo " --- Download & install 'R' using gu"; gu install R; echo
-
+RUN echo; echo " --- Download & install 'Ruby' using gu"; gu install ruby; echo
 
 # Install Java 8
 COPY --from=java:8u111-jdk /usr/lib/jvm /usr/lib/jvm

docker-images/Dockerfile-gui

@@ -8,7 +8,7 @@ RUN apt-get update \
     && apt-get install -yq --no-install-recommends \
        x11vnc xvfb xterm \
        xfonts-75dpi xfonts-100dpi xfonts-base \
-       libfontconfig1 libxrender1 libxtst6 \
+       libfontconfig1 libxrender1 libxtst6 openssl libssl-dev \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* /tmp/*
 
@@ -19,6 +19,11 @@ RUN echo ""; echo "Contents of ~/.xinitrc"; echo ""; cat ~/.xinitrc; echo "";
 RUN echo "xterm*font:     *-Monospace-*-*-*-18-*" > ~/.Xresources
 RUN echo ""; echo "Contents of ~/.Xresources"; echo ""; cat ~/.Xresources; echo "";
 
+# Necessary for TruffleRuby/ruby gem installation process
+# The fixes missing SO library errors we get for libssl.so.nn and libcrypto.so.nn, alternatively you can run https://github.com/oracle/truffleruby/blob/master/lib/truffle/post_install_hook.sh
+RUN ln -s /usr/lib/x86_64-linux-gnu/libssl.so.1.0.2 /usr/lib/x86_64-linux-gnu/libssl.so.10
+RUN ln -s /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.2 /usr/lib/x86_64-linux-gnu/libcrypto.so.10
+
 LABEL maintainer="GraalVM team"
 LABEL example_git_repo="https://github.com/graalvm/graalvm-demos"
 LABEL graalvm_version=${FULL_GRAALVM_VERSION}