Error installing Qt 6.5.5 into Ubuntu 22.04 Docker Container

[JeffK]

Hi All,

I am having almost the exact same problem as described in post https://forum.qt.io/topic/156812/qt6-5-5-in-ubuntu-24-04-container, but the solution there is not working for me. I am trying to install Qt 6.5.5 into a Docker container running Ubuntu 22.04. Here is the command line that I'm using in the dockerfile to run the install:

RUN /tmp/qt-enterprise-linux-x64-6.5.5.run --accept-licenses --default-answer --confirm-command install qt.qt6.655.gcc_64

Here's the portion of the output that shows the error:

25 40.50 [30338] Installing component Desktop gcc 64-bit
#25 40.50 [30338] backup qt.qt6.655.gcc_64 operation: ConsumeOutput
#25 40.50 [30338] 	- arguments: qt.qt6.655.gcc_64_qmakeoutput, /opt/Qt6.5.5/6.5.5/gcc_64/bin/qmake, -query
#25 40.50 [30338] Done
#25 40.50 [30338] perform qt.qt6.655.gcc_64 operation: ConsumeOutput
#25 40.50 [30338] 	- arguments: qt.qt6.655.gcc_64_qmakeoutput, /opt/Qt6.5.5/6.5.5/gcc_64/bin/qmake, -query
#25 42.08 [31918] Warning: Cannot get any query output from executable "/opt/Qt6.5.5/6.5.5/gcc_64/bin/qmake"
#25 42.08 [31918] Done
#25 42.08 [31919] backup qt.qt6.655.gcc_64 operation: QtPatch
#25 42.08 [31919] 	- arguments: linux, /opt/Qt6.5.5/6.5.5/gcc_64, qt5, QmakeOutputInstallerKey=qt.qt6.655.gcc_64_qmakeoutput
#25 42.08 [31919] Done
#25 42.08 [31919] perform qt.qt6.655.gcc_64 operation: QtPatch
#25 42.08 [31919] 	- arguments: linux, /opt/Qt6.5.5/6.5.5/gcc_64, qt5, QmakeOutputInstallerKey=qt.qt6.655.gcc_64_qmakeoutput
#25 42.09 [31928] Done
#25 42.09 [31928] Operation \"QtPatch\" with arguments \"linux; /opt/Qt6.5.5/6.5.5/gcc_64; qt5; QmakeOutputInstallerKey=qt.qt6.655.gcc_64_qmakeoutput\" failed: Could not find the required QmakeOutputInstallerKey(qt.qt6.655.gcc_64_qmakeoutput) value on the installer object. The ConsumeOutput operation on the valid qmake needs to be called first.
#25 42.09 [31929] installationErrorWithCancel : Installer Error : Error during installation process (qt.qt6.655.gcc_64):
#25 42.09 Could not find the required QmakeOutputInstallerKey(qt.qt6.655.gcc_64_qmakeoutput) value on the installer object. The ConsumeOutput operation on the valid qmake needs to be called first. Retry|Ignore|Cancel
#25 42.09 [31929] Answer: "Cancel"

It appears that the installer is trying to run qmake but not finding it or it's not producing the expected output. I have tried adding:

apt-get install -y qmake6

to my dockerfile before the install command, as suggested in the previous post, but that had no effect. I have also tried installing Qt6.7.2 in this manner and got the same error. Please help!