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ClearScale Ubuntu 26.04 LTS vs Docker on Ubuntu 20.04 LTS comparison

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Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

ClearScale Ubuntu 26.04 LTS
Ranking in AWS Marketplace
189th
Average Rating
10.0
Number of Reviews
5
Ranking in other categories
No ranking in other categories
Docker on Ubuntu 20.04 LTS
Ranking in AWS Marketplace
465th
Average Rating
9.0
Number of Reviews
3
Ranking in other categories
No ranking in other categories
 

Featured Reviews

reviewer2855598 - PeerSpot reviewer
Cloud DevOps Engineer at a consultancy with 10,001+ employees
CIS hardening has simplified secure container workloads but AppArmor still blocks Docker by default
The CIS L1 AppArmor enforcement breaks Docker out of the box. Containers fail to start with a permission denied on the containerd task directory. There is no documentation about this. A simple note explaining that Docker users need to either update the runc AppArmor profile or disable it would save a lot of debugging time. It takes a while to trace the failure back to AppArmor blocking runc writes to /run/containerd/.
FilipGrasheski - PeerSpot reviewer
Senior Manager - Platform Lead at a tech vendor with 10,001+ employees
Containerization has streamlined deployments and supports diverse monitoring and web workloads
I would rate Docker on Ubuntu 20.04 LTS a nine out of ten. I give it a nine because there is always room for improvement, so I would not give any product a perfect ten. Regarding Docker on Ubuntu 20.04 LTS's AI capabilities, I think its governance and security work quite well in terms of namespace isolation; the security is quite strong, but if you want something like image vulnerability scanning, it does not have anything built in, so you have to rely on third-party toolsets, and secret management is a bit of a downside. Docker on Ubuntu 20.04 LTS is pretty accurate regarding its AI capabilities and the accuracy and reliability of output. My advice to others looking into using Docker on Ubuntu 20.04 LTS is that if you are not using it, then try it. My overall review rating for Docker on Ubuntu 20.04 LTS is nine.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The pre-applied CIS L1 benchmark is the main selling point, as getting a hardened baseline without manual effort is genuinely useful and the Ubuntu 26.04 LTS base also means I'm on a supported, up-to-date kernel with long-term security patches."
"The same-day engineering support has been very valuable."
"ClearScale Ubuntu 26.04 LTS is an excellent choice for organizations adopting cloud-native technologies and modern DevOps practices."
"Once you get that launch template dialed in, the image is incredibly solid."
"The hourly software charge is small relative to the engineering time we used to spend building and maintaining our own hardened AMI."
"For us it is a small tool; it is not a big investment, so we are not tracking the ROI of the product directly, but I can tell you that it gives a lot of useful features and overall the ROI is worth it."
"Docker provides comprehensive support for any deployment process, maintenance, or surveillance of any kind of project because it offers CLI and APIs, Docker Hub, and Docker Desktop client."
"Docker on Ubuntu 20.04 LTS has positively impacted my organization as it provides a good way to run our toolsets and applications."
 

Cons

"The CIS L1 AppArmor enforcement breaks Docker out of the box."
"It'd be cool to have more detailed changelogs with each new release so we can see exactly what packages got updated without having to boot up a test instance and diff it ourselves."
"Because the firewall ships default-deny, the first launch in a new environment takes a little planning to open the exact ports the app and load balancer health checks need."
"Enterprise management and compliance tooling could be more comprehensive out of the box."
"Docker on Ubuntu 20.04 LTS can be improved, particularly as security features can always be enhanced, and the configuration is somewhat fragmented with different configuration files that can sometimes be cumbersome."
"Connecting two containers to each other is very tricky and time-consuming for me as a developer."
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Questions from the Community

What is your experience regarding pricing and costs for ClearScale Ubuntu 26.04 LTS?
The hourly premium is honestly negligible compared to the salary hours I was wasting building, patching, and maintaining my own custom images. If you have a decent-sized fleet, look at the total co...
What needs improvement with ClearScale Ubuntu 26.04 LTS?
It would be cool to have more detailed changelogs with each new release so I can see exactly what packages got updated without having to boot up a test instance and diff it myself.
What is your primary use case for ClearScale Ubuntu 26.04 LTS?
I run a bunch of stateless REST APIs and web apps in AWS behind an Application Load Balancer. Everything lives in Auto Scaling Groups (ASGs). I use this AMI as the default base for those instances ...
What is your experience regarding pricing and costs for Docker on Ubuntu 20.04 LTS?
My experience with pricing, setup cost, and licensing for Docker on Ubuntu 20.04 LTS is quite good as it is all official on Docker.
What needs improvement with Docker on Ubuntu 20.04 LTS?
Docker on Ubuntu 20.04 LTS can be improved, particularly as security features can always be enhanced, and the configuration is somewhat fragmented with different configuration files that can someti...
What is your primary use case for Docker on Ubuntu 20.04 LTS?
My main use case for Docker on Ubuntu 20.04 LTS is to run Docker containers. A quick specific example of how I use Docker containers in my environment includes utilizing them for all kinds of appli...
 

Comparisons

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Overview

Find out what your peers are saying about ClearScale Ubuntu 26.04 LTS vs. Docker on Ubuntu 20.04 LTS and other solutions. Updated: September 2026.
915,341 professionals have used our research since 2012.