Slightly broken script for making MegaGlest Appimage

MakeMGAppImage.sh

#!/bin/bash

# . /etc/os-release
# if [[ $ID != "ubuntu" || $VERSION_ID != "18.04" ]];
# then
#     echo "Ubuntu 18.04 is required! System found: $ID $VERSION_ID"
# fi;
AppImageMG="AppImageMG"
rm -rf $AppImageMG
mkdir $AppImageMG

echo
echo "Getting build deps..."
# sudo ./setupBuildDeps.sh

ec
echo "Building and installing MegaGlest..."
mkdir build
cd build
cmake -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_MEGAGLEST_MAP_EDITOR=OFF -DBUILD_MEGAGLEST_MODEL_VIEWER=OFF ../../..
make -j8 && make install DESTDIR="../$AppImageMG"
strip "../$AppImageMG/usr/bin/megaglest"
strip "../$AppImageMG/usr/bin/megaglest_editor"
strip "../$AppImageMG/usr/bin/megaglest_g3dviewer"

echo
echo "installing data..."
# ../../linux/clone-data.sh

cd ..
mkdir build_data
cd build_data
cmake -DCMAKE_INSTALL_PREFIX=/usr ../../../data/glest_game
make && make install DESTDIR="../$AppImageMG"
cd ..
# rm -rf build
# Remove useless metainfo.
# rm Glest/usr/share/metainfo/io.glest.Editor.appdata.xml

wget -c "https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage"

echo
echo "Creating the AppImage..."

# Path to pulseaudio libs.
# export LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/pulseaudio/
# :/usr/lib/i386-linux-gnu/pulseaudio/:$LD_LIBRARY_PATH

chmod +x linuxdeploy-x86_64.AppImage
# rm $AppImageMG/usr/share/applications/megaglest_g3dviewer.desktop
# rm $AppImageMG/usr/share/applications/megaglest_editor.desktop
# rm $AppImageMG/usr/share/metainfo/megaglest_editor.appdata.xml
cp $AppImageMG/usr/bin/megaglest $AppImageMG/usr/bin/megaglest_editor
cp $AppImageMG/usr/bin/megaglest $AppImageMG/usr/bin/megaglest_g3dviewer

./linuxdeploy-x86_64.AppImage --appdir=$AppImageMG --output appimage
chmod +x Mega*.AppImage

echo
echo "Done!"