This section highlights important changes in {Singularity} 4.4 that are of note to system administrators. See also the "What's New" section in the User Guide for user-facing changes.
- docker-daemon OCI image sources now buffer via a temporary file instead of
in-memory. Note that the file is created in
$TMPDIR- the dependency involved cannot be instructed to use$SINGULARITY_TMPDIRat this time.
- Improved support for hosts that have
/etc/resolv.confpointing to a symlink under/run, such as those hosts that are runningsystemd-resolved. In this case, the symlink is copied into the container and the parent directory of the target of the symlink is bind-mounted from the host. The result is that even if the target of the symlink is replaced with a new file, the container sees the update in/etc/resolv.conf. - Support for starting fakeroot from setuid mode while in an NFS directory.
- Go 1.25.6 or above is now required to build SingularityCE.