based on https://gist.github.com/J-Rios/e4e6575624af2068c8927541213c5cd1

linuxdeployqt.Dockerfile

FROM ubuntu:trusty

RUN apt-get update && apt-get install -y \
        libglib2.0-0 \
        wget \
    && rm -rf /var/lib/apt/lists/*

RUN wget https://raw.githubusercontent.com/J-Rios/BASH-Scripts/master/install/install_qt5 \
    && chmod +x install_qt5 \
    && ./install_qt5 \
    && rm -f ./install_qt5

WORKDIR /root
RUN wget https://github.com/probonopd/linuxdeployqt/releases/download/6/linuxdeployqt-6-x86_64.AppImage \
    && chmod +x linuxdeployqt-6-x86_64.AppImage \
    && ./linuxdeployqt-6-x86_64.AppImage --appimage-extract \
    && mv squashfs-root deployqt \
    && ln -s /root/deployqt/AppRun /usr/local/sbin/linuxdeployqt \
    && rm -f linuxdeployqt-6-x86_64.AppImage