Docker Base Images Compare
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RHEL AtomicDebian (stable-slim)UbuntuMinidebAlpineDebian StablePhusion (Ubuntu)
Centos Buildah (No Yum)
Centos Buildah (With Yum)
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C Libraryglibcglibcglibcglibcmusl cglibcglibcglibcglibc
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Packaging Formatrpmdpkgdpkgdpkgapkdpkgdpkg--
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Core UtilitiesGNU Core UtilsGNU Core UtilsGNU Core UtilsGNU Core UtilsBusyboxGNU Core UtilsGNU Core UtilsGNU Core UtilsGNU Core Utils
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Size Across Wire30MB26MB31.76MB22.05MB2.20MB45MB100+MB23.02MB-
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Size on Disk78.4MB55.3MB81.4MB53.7MB4.41MB100MB209MB56.4MB120MB
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Life Cycle6 months-5 years--2 years---
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Compatibility Guarantees
Generally within minor version-
Generally within minor version
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Generally within minor version
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Troubleshooting ToolsIntegrated with Technical SupportStandard PackagesStandard PackagesStandard PackagesStandard PackagesStandard PackagesStandard Packages--
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Technical SupportCommercial & CommunityCommunity
Commercial & Community
CommunityCommunityCommunityCommunityCommunityCommunity
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ISV SupportLarge CommercialCommunityLarge CommunityCommunitySmall CommunityCommunitySmall CommunityCommunityCommunity
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UpdatesCommercialCommunityCommunityCommunityCommunityCommunityCommunityCommunityCommunity
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TrackingOVAL Data,CVE Database, VulnerabilityAPI & Errata,Lab ToolsOVAL Data, CVE Database, & ErrataOVAL Data, CVE Database, & ErrataOVAL Data, CVE Database, & ErrataLimited Database
OVAL Data, CVE Database, & Errata
OVAL Data, CVE Database, & Errata-Community
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Security Response Team
Commercial & CommunityCommunity
Commercial & Community
Community-Community
Commercial & Community
CommunityCommunity
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Automated TestingCommercial------
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Performance Engineering Team
CommercialCommunityCommunityCommunityCommunityNone FoundCommunityCommunityCommunity
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Docker Pullregistry.access.redhat.com/rhel-atomicdebian:stable-slimubuntubitnami/minidebalpineCommunityphusion/baseimagetdudgeon/centos-base-
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NotesxsdxOfficial debian repo is constantly improving and now quite smallSlightly bigger than Minideb but seems to have the same security benefits.Small and has CVE database. Built every 24 hours with security patches. Offical Debian container has closed the gap on size.Small but cannot use open source vulnerability scanners as the CVE database is limited.There is a slim version so no need to use this.This is quite large compared to the newer generation of images. It does have some interesting fixes inside but I'm not sure they are applicable for running applications in containers under Kubernetes.No Yum means can't scan easily with the various open source scanners.This is approximately half the size of the standard Centos (200MB). Has a smaller surface area and can be scanned. No CVE Database though.
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Sources
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Redhat Source
http://crunchtools.com/comparison-linux-container-images/
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Atomic
https://www.reddit.com/r/redhat/comments/9evo02/rhel7_atomic_base_image_free_to_use/e5s7vp9/
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Centos Buildah
https://www.informaticsmatters.com/blog/2018/04/04/smaller-containers-part-3.html
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Ubuntu minimal
https://blog.ubuntu.com/2018/07/09/minimal-ubuntu-released
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Minidebhttps://news.ycombinator.com/item?id=15285402
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Mindeb Comparison
https://dzone.com/articles/minideb-a-minimalist-debian-based-docker-image
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