sylabs/singularity: SingularityCE 4.0.0 Release Candidate 2

SingularityCE 4.0.0-rc.2 is a release candidate for the upcoming 4.0.0 release, with the changes detailed below relative to 4.0.0-rc.1. See the 4.0.0-rc.1 release notes for a full changelog. OCI-mode If system does not meet the requirements for using OCI-SIF, OCI mode will fall back to a filesystem-based strategy: the OCI container will be unpacked into a temporary sandbox dir and run from there. New Features & Functionality Execution flows that unpack an image into a temporary sandbox dir can now be disabled, by setting "tmp sandbox = no" in singularity.conf or by passing --no-tmp-sandbox to the relevant run / shell / exec command. Bug Fixes Improved help text for compile and install subcommands of plugin command. Thanks to tonghuaroot (https://github.com/tonghuaroot) for the suggested improvements. Fix compilation with the mconfig -b option (custom builddir). Thanks / Reporting Bugs Thanks to our contributors for code, feedback and, testing efforts! As always, please report any bugs to: https://github.com/sylabs/singularity/issues/new If you think that you've discovered a security vulnerability please report it to: security@sylabs.io Have fun! Downloads Source Code Please use the singularity-ce-4.0.0-rc.2.tar.gz download below to obtain and install SingularityCE 4.0.0-rc.2. The GitHub auto-generated 'Source Code' downloads do not include required dependencies etc. Packages RPM / DEB packages are provided for: Ubuntu 20.04 (focal) Ubuntu 22.04 (jammy) RHEL/CentOS 7 (el7) RHEL/CentOS/AlmaLinux/Rocky 8 (el8) RHEL/CentOS/AlmaLinux/Rocky 9 (el9) These packages were built with Go 1.21.