diff --git a/appimage/Dockerfile b/appimage/Dockerfile
index 638d24d153..cb204c6f9f 100644
--- a/appimage/Dockerfile
+++ b/appimage/Dockerfile
@@ -1,39 +1,39 @@
 FROM centos:6.10
 
 RUN yum -y update && yum -y install wget && yum -y install centos-release-scl epel-release && yum -y update && yum -y install devtoolset-6-gcc devtoolset-6-gcc-c++ devtoolset-6-binutils wget tar bzip2 git libtool which fuse fuse-devel libpng-devel automake cppunit-devel cmake glibc-headers libstdc++-devel gcc-c++ freetype-devel fontconfig-devel libxml2-devel libstdc++-devel libXrender-devel patch xcb-util-keysyms-devel libXi-devel libudev-devel.x86_64 openssl-devel sqlite-devel.x86_64 gperftools.x86_64 gperf.x86_64 libicu-devel.x86_64 boost-devel.x86_64 libxslt-devel.x86_64 docbook-style-xsl.noarch python27.x86_64 cmake3.x86_64 ruby bison flex bison-devel ruby-devel flex-devel xz xz-devel pcre-devel pcre2-devel pcre pcre2 mesa-libEGL-devel mesa-libGL-devel glib-devel gettext perl-URI.noarch bzip2-devel.x86_64 subversion-devel.x86_64 subversion.x86_64 sqlite2-devel.x86_64 hunspell-devel aspell-devel hspell-devel vim sudo unzip xkeyboard-config
 RUN cd /tmp && wget http://opensource.wandisco.com/rhel/6/svn-1.9/RPMS/x86_64/subversion-1.9.4-3.x86_64.rpm http://opensource.wandisco.com/rhel/6/svn-1.9/RPMS/x86_64/subversion-devel-1.9.4-3.x86_64.rpm http://opensource.wandisco.com/rhel/6/svn-1.9/RPMS/x86_64/serf-1.3.7-1.x86_64.rpm && yum -y install subversion* serf*; rm subversion* serf*
 
 RUN echo ". /opt/rh/devtoolset-6/enable && chmod +x /opt/rh/python27/enable && . /opt/rh/python27/enable" >> /root/.bashrc
 
-ENV LC_ALL=en_US.UTF-8 LANG=en_us.UTF-8 QTVERSION=5.9.7 QTVERSION_SHORT=5.9 LLVM_VERSION=6.0.1 LLVM_ROOT=/opt/llvm/ LD_LIBRARY_PATH=$QTDIR/lib/
+ENV LC_ALL=en_US.UTF-8 LANG=en_us.UTF-8 PYTHON_VERSION=3.6.7 QTVERSION=5.9.7 QTVERSION_SHORT=5.9 LLVM_VERSION=6.0.1 LLVM_ROOT=/opt/llvm/ LD_LIBRARY_PATH=$QTDIR/lib/
 ENV QTDIR=/opt/qt5
 
 RUN bash -c "ln -sf /opt/rh/devtoolset-6/root/usr/bin/g++ /usr/bin/g++ && ln -sf /opt/rh/devtoolset-6/root/usr/bin/c++ /usr/bin/c++"
 
 # Build Qt5
 RUN bash -c "mkdir -p /qt && cd /qt && wget http://download.qt.io/archive/qt/${QTVERSION_SHORT}/${QTVERSION}/single/qt-everywhere-opensource-src-${QTVERSION}.tar.xz"
 RUN bash -c "cd /qt && tar xvf qt-everywhere-opensource-src-${QTVERSION}.tar.xz"
 RUN bash -c "export MAKEFLAGS=-j$(nproc) && cd /qt/qt-everywhere-opensource-src-${QTVERSION} && ./configure -v -skip qt3d -skip qtconnectivity -skip qtgamepad -skip qtlocation -skip qtcharts -skip qtremoteobjects -skip qtscxml -skip qtsensors -platform linux-g++ -qt-pcre -qt-xcb -qt-xkbcommon-x11 -xkb-config-root /usr/share/X11/xkb -no-pch -nomake tests -nomake examples -confirm-license -opensource -prefix $QTDIR && make -j$(nproc) || make -j 1 install; make -j$(nproc) install && rm -Rf /qt"
 
 RUN ln -sf $QTDIR/bin/qmake /usr/bin/qmake-qt5
 
 # Build qtwebkit
 RUN bash -c "mkdir -p /qtwk && cd /qtwk && wget http://download.qt.io/archive/qt/${QTVERSION_SHORT}/5.9.1/submodules/qtwebkit-opensource-src-5.9.1.tar.xz"
 RUN bash -c "cd /qtwk/ && tar xvf qtwebkit-opensource-src-5.9.1.tar.xz"
 RUN bash -c "cd /qtwk/qtwebkit-opensource-src-5.9.1 &&  $QTDIR/bin/qmake && make -j$(nproc) || make -j$(nproc) && make -j$(nproc) install && rm -Rf /qtwk"
 
 # Install ninja
 RUN bash -c "yum install unzip && mkdir -p /tmp/deploy && cd /tmp/deploy && wget https://github.com/ninja-build/ninja/releases/download/v1.7.2/ninja-linux.zip && unzip ninja-linux.zip && mv -f ninja /usr/local/bin && cd .. && rm -Rf deploy"
 
 # Build Clang/LLVM
 RUN bash -c "mkdir -p /llvm && cd /llvm && wget http://llvm.org/releases/${LLVM_VERSION}/llvm-${LLVM_VERSION}.src.tar.xz"
 RUN bash -c "cd /llvm && tar xvf llvm-${LLVM_VERSION}.src.tar.xz && cd llvm-${LLVM_VERSION}.src"
 RUN bash -c "cd /llvm/llvm-${LLVM_VERSION}.src/tools && wget http://llvm.org/releases/${LLVM_VERSION}/cfe-${LLVM_VERSION}.src.tar.xz"
 RUN bash -c "cd /llvm/llvm-${LLVM_VERSION}.src/tools && tar xvf cfe-${LLVM_VERSION}.src.tar.xz"
 RUN bash -c ". /opt/rh/python27/enable && . /opt/rh/devtoolset-6/enable && python --version && cd /llvm/llvm-${LLVM_VERSION}.src && mkdir -p build && cd build && cmake3 -G Ninja .. -DCMAKE_INSTALL_PREFIX=/opt/llvm/ -DCMAKE_BUILD_TYPE=Release -DLLVM_INCLUDE_TESTS=OFF -DLLVM_TARGETS_TO_BUILD=X86 && ninja install && rm -Rf /llvm"
 
 # Build Python
-RUN bash -c "mkdir -p /python && cd /python && wget https://www.python.org/ftp/python/3.6.0/Python-3.6.0.tar.xz && tar xvf Python-3.6.0.tar.xz && cd /python/Python-3.6.0 && mkdir -p /usr/lib/pkgconfig && ./configure --prefix=/usr --enable-shared && make -j$(nproc) install && rm -Rf /python"
+RUN bash -c "mkdir -p /python && cd /python && wget https://www.python.org/ftp/python/$PYTHON_VERSION/Python-$PYTHON_VERSION.tar.xz && tar xvf Python-$PYTHON_VERSION.tar.xz && cd /python/Python-$PYTHON_VERSION && mkdir -p /usr/lib/pkgconfig && ./configure --prefix=/usr --enable-shared && make -j$(nproc) install && rm -Rf /python"
 
 
 CMD /bin/bash