Apptainer: Application Containers for Linux

clint@my-pc:~$ apptainer inspect ubuntu.sif

org.label-schema.build-arch: amd64

org.label-schema.build-date: Wednesday_25_January_2023_12:2:15_EST

org.label-schema.schema-version: 1.0

org.label-schema.usage.apptainer.version: 1.1.4

org.label-schema.usage.singularity.deffile.bootstrap: docker

org.label-schema.usage.singularity.deffile.from: ubuntu:20.04