Issue with UI when using DevContaner

Deployment
,
1

I’ve set up my local dev environment to use a DevContainer in VSCode for development of customizations that target CM 11.1.5. I’ve followed the DevContainer setup instructions and have brought my container stack up with (seemingly) no errors. However, when I open http://localhost in a browser, I get a status code of 404. I saw the post below and am wondering if what I’m seeing is related?

Docker Engine Version Compatibility and Licensing Update

The post mentions docker engine versions 1.28.x and 1.29.x. I ran ‘docker version’ (output below) and I don’t see any versions that are similar to those mentioned in the post. I’m looking for some assistance in determining if I need to change my docker engine version.

Client: Docker Engine - Community
Version: 29.1.1
API version: 1.52
Go version: go1.25.4
Git commit: 0aedba5
Built: Fri Nov 28 11:33:04 2025
OS/Arch: linux/amd64
Context: default

Server: Docker Engine - Community
Engine:
Version: 29.1.1
API version: 1.52 (minimum version 1.44)
Go version: go1.25.4
Git commit: 9a84135
Built: Fri Nov 28 11:33:04 2025
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: v2.2.0
GitCommit: 1c4457e00facac03ce1d75f7b6777a7a851e5c41
runc:
Version: 1.3.4
GitCommit: v1.3.4-0-gd6d73eb8
docker-init:
Version: 0.19.0
GitCommit: de40ad0

2

Since we’re currently running CM 11.1.5, I downgraded my docker so the engine version is 28.1.1. This has fixed the issue.

**Recommendation: **Update the Platform Setup - Install Docker section of the documentation it include the commands for installing the appropriate version of docker community based on CM version. It’ll save everyone some time.