Setup LinuxDeployQT in a Docker container. Instructions on how to prepare a Docker Container to use linuxdeployqt from an Ubuntu 18.04 host system through a Ubuntu 14.04 Docker container.

Ubuntu_18.04_linuxdeployqt_Docker_Container.md

Setup LinuxDeployQT in a Docker container

1. Install Docker:

wget https://raw.githubusercontent.com/J-Rios/BASH-Scripts/master/install/install_docker
sudo chmod +x install_docker
sudo ./install_docker

2. Get Ubuntu 14.04 Docker base image:

sudo docker pull ubuntu:trusty

3. Launch a container of the downloaded Ubuntu image:

sudo docker run -d --name dockerdeployqt -it ubuntu:trusty

4. Enter the Container and get all required elements:

sudo docker exec -it dockerdeployqt bash
cd /root
apt-get update
apt-get -y install wget
apt-get -y install libglib2.0-0

5. Install QT5:

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

6. Get and setup linuxdeployqt tool:

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

7. Check that linuxdeployqt is working:

linuxdeployqt

8. Exit the Container ad stop it (everything is ready to be used):

exit
sudo docker stop dockerdeployqt

This is awesome, first off, thanks for making this. I tried my best, and couldn't get it to work. My host system is Ubuntu 18.04(Linux Mint) and set the Qt Target in Qt Creator to 5.9.5, which is the default for Ubuntu 18.04. When I package the app following the instructions in linuxdeployqt and then run the "AppRun" binary inside the 14.04 Ubuntu container, I get the following messages:

root@fa188903c1f5:~# ./AppRun ./AppRun: /usr/lib/x86_64-linux-gnu/libQt5Multimedia.so.5: no version information available (required by ./AppRun) ./AppRun: /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5: no version information available (required by ./AppRun) ./AppRun: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: no version information available (required by ./AppRun) ./AppRun: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: no version information available (required by ./AppRun) ./AppRun: /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5: no version information available (required by ./AppRun) ./AppRun: relocation error: ./AppRun: symbol qt_version_tag, version Qt_5.9 not defined in file libQt5Core.so.5 with link time reference

Any idea of how to fix it?

I ran qmake -v and this is the version I have inside the container:

QMake version 3.0 Using Qt version 5.2.1 in /usr/lib/x86_64-linux-gnu

Is this because I'm just not able to deploy the under Qt something written in Qt 5.9.5 to 5.2.1? Or is there another reason for this error?

Hope I was clear enough about my issue :)

I have created a Dockerfile based on these instructions: https://gist.github.com/ratijas/f62ac36768d72d3a925ebfe114b0cd15

Qt is very ancient on ubuntu:trusty. Need to find a way to install latest 5.15.

I actually had solved the problem. But thanks so much for the docker file!

@thebigG I am having same problem, could you share the solution please. I am using Qt 5.15.

Hi there @askumar31! I ended up not using linuxdeployqt. I used this-->https://github.com/AppImageCrafters/appimage-builder
I highly suggest you use it too; it is a very intuitive/easy-to-use implementation of AppImageKit.
They have a great tutorial right here-->https://appimage-builder.readthedocs.io/en/latest/intro/tutorial.html#what-s-next

I highly suggest taking your time and reading the tutorial--it helped me a ton!

I also wrote a script for my own project that makes building the AppImage a little easier if you are familiar with Qt's build system(qmake): https://github.com/thebigG/Tasker/blob/main/Tasker/build_AppImage.py

Hopefully you can get in there and change a few variables and use it for your own purposes!

Note that appimage-builder has support for testing on docker containers(you can easily test ALL linux distros with just a few command) and all of that good stuff!

I also highly recommend joining the IRC chat on here https://webchat.freenode.net/#AppImage

A lot of people(including me) hang out there a lot and are always willing to help!

Hopefully you find this somewhat helpful.
Cheers!

In case you want to run an AppImage in a Docker container where FUSE doesn't work unless you run it with --privileged (dangerous),
try the --appimage-extract-and-run option:

linuxdeployqt-continuous-x86_64.AppImage *.desktop -appimage --appimage-extract-and-run

Works on my end and is easier than to manually extract and run the deploy tool.

Create Dockerfile with Ubuntu 18.04

FROM ubuntu:18.04

RUN apt-get update && apt-get install -y
wget
qt5-default
gcc
g++
cmake

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