* fix(core): remove unused TEMP_DIR mktemp leak in build_container
The build_container() function created a temp directory via mktemp -d and
pushd into it, but never popd or rm -rf. The directory was not used for
anything — FUNCTIONS_FILE_PATH is downloaded into a variable, not a file.
Remove the mktemp -d and pushd entirely to eliminate the leak.
* fix(sonarqube): clean up temp file after zip extraction
The SonarQube update function (ct/sonarqube.sh) never deleted the
downloaded zip file (~200-500 MB) from /tmp after extraction. On LXC
containers with 4-8 GB disks, this accumulates with every update and
can eventually fill the disk.
Also add explicit cleanup in the install script instead of relying
solely on cleanup_lxc() pattern matching.
CanbiZ (MickLesk)
e55fe43e2d