I am attempting to build a slim image for unreal 5.6 for our pipeline as it is not yet available from https://github.com/orgs/EpicGames/packages/container/package/unreal\-engine using the files in the UnrealEngine\Engine\Extras\Containers\Dockerfiles\ part of the github project without any success, after many hours I receive the following error message:
Took 910.3147541999999s to run UnrealEditor, ExitCode=137
Editor terminated with exit code 137 (signal 9) while running DerivedDataCache; see log /home/ue4/Library/Logs/Unreal Engine/LocalBuildLogs/BuildDerivedDataCache/DerivedDataCache-2025.07.18-14.46.45.txt
AutomationTool executed for 0h 40m 28s
AutomationTool exiting with ExitCode=1 (Error_Unknown)
Took 2428.8740723s to run AutomationTool, ExitCode=1
AutomationTool executed for 6h 45m 0s
AutomationTool exiting with ExitCode=1 (Error_Unknown)
RunUAT ERROR: AutomationTool was unable to run successfully. Exited with code: 1
Error: building at STEP “RUN ./Engine/Build/BatchFiles/RunUAT.sh BuildGraph -target=“Make Installed Build Linux” -script=Engine/Build/InstalledEngineBuild.xml -set:HostPlatformOnly=true -set:WithDDC=true -set:BuildIdOverride=UE_5.4 -set:WithLinuxArm64=false -set:WithClient=true -set:WithServer=true && rm -R -f /home/ue4/UnrealEngine/LocalBuilds/InstalledDDC && echo ‘’ && echo ‘RUN directive complete. Docker will now commit the filesystem layer to disk.’ && echo ‘Note that for large filesystem layers this can take quite some time.’ && echo ‘Performing filesystem layer commit…’ && echo ‘’”: while running runtime: exit status 1
Any help would be appreciated though an ETA (if in the near future) for the 5.6 images in https://github.com/orgs/EpicGames/packages/container/package/unreal\-engine would be just as well.
Thanks