Docker build for Qt 5.6.2 and Python 3.5.3 on CentOS 6.8

Dockerfile

FROM centos:6.8

RUN yum -y install centos-release-scl && \
    yum -y update && \
    yum -y install devtoolset-3-gcc devtoolset-3-gcc-c++ devtoolset-3-binutils \
    curl tar perl make openssl-devel \
    libxcb libxcb-devel xcb-util xcb-util-devel \
    libXrender libXrender-devel xcb-util-wm xcb-util-wm-devel \
    xcb-util-image xcb-util-image-devel \
    xcb-util-keysyms xcb-util-keysyms-devel \
    xcb-util-renderutil xcb-util-renderutil-devel \
    libXi libXi-devel mesa-libGL mesa-libGL-devel mesa-libEGL mesa-libEGL-devel \
    fontconfig fontconfig-devel libicu libicu-devel;

RUN ln -sf /opt/rh/devtoolset-3/root/usr/bin/gcc /usr/bin/gcc && \
    ln -sf /opt/rh/devtoolset-3/root/usr/bin/cpp /usr/bin/cpp && \
    ln -sf /opt/rh/devtoolset-3/root/usr/bin/g++ /usr/bin/g++ && \
    ln -sf /opt/rh/devtoolset-3/root/usr/bin/c++ /usr/bin/c++;

ADD Python-3.5.3.tgz /

RUN cd Python-3.5.3; \
    ./configure --enable-shared; \
    make; \
    make install; \
    cd ..; \
    rm -rf Python-3.5.3;

ENV LD_LIBRARY_PATH /usr/local/lib

ADD qt-everywhere-opensource-src-5.6.2.tar.gz /

RUN cd qt-everywhere-opensource-src-5.6.2; \
    ./configure -opensource -confirm-license -nomake tests -nomake examples -system-xcb -no-qml-debug -prefix /opt/qt56; \
    make; \
    make install; \
    cd ..; \