kubectl-helm-minikube cannot download kubectl version latest

[joebowbeer]

kubectl-helm-minikube fails when I install it with default version (latest) for kubectl.

Workaround: Specify a version, e.g., "version": "1.33.2"

However, I added a (failing) test in this repo but it passed 😒

0.447 Feature       : Kubectl, Helm, and Minikube
0.447 Description   : Installs latest version of kubectl, Helm, and optionally minikube. Auto-detects latest versions and insta
lls needed dependencies.
0.447 Id            : ghcr.io/devcontainers/features/kubectl-helm-minikube
0.447 Version       : 1.2.2
0.447 Documentation : https://github.com/devcontainers/features/tree/main/src/kubectl-helm-minikube
0.447 Options       :
0.447     VERSION="latest"
0.447     HELM="latest"
0.447     MINIKUBE="none"
0.447 ===========================================================================
0.482 Downloading kubectl...
95.73 curl: (3) URL using bad/illegal format or missing URL
95.73 ERROR: Feature "Kubectl, Helm, and Minikube" (ghcr.io/devcontainers/features/kubectl-helm-minikube) failed to install! Lo
ok at the documentation at https://github.com/devcontainers/features/tree/main/src/kubectl-helm-minikube for help troubleshooti
ng this error.

[Kaniska244]

Hello @joebowbeer ,

Thank you for reporting this issue. Would it be possible for you to provide more details on your setup, such as the devcontainer.json, Dockerfile/ docker compose (if used). It would immensely help us to investigate this issue further.

With Regards,
Kaniska

[tallaxes]

I am seeing the same thing. It looks like just trying curl https://dl.k8s.io/release/stable.txt (but not e.g. /latest.txt) hits some kind of server (fastly?) timeout after 90s, which also explains why specifying the version works (the script bypasses curl stable.txt then). Here is what the tail end of curl -vssL https://dl.k8s.io/release/stable.txt looks like:

...
> GET /release/stable.txt HTTP/2
> Host: cdn.dl.k8s.io
> User-Agent: curl/8.5.0
> Accept: */*
> 
< HTTP/2 503 
< content-type: text/plain;charset=US-ASCII
< fastly-host: cache-bfi-krnt7300083-BFI
< server: Varnish
< date: Sat, 12 Jul 2025 01:59:43 GMT
< 
Timed out while waiting on cache-bfi-krnt7300083-BFI
* Connection #1 to host cdn.dl.k8s.io left intact

It does seem to be happening frequently (and can often be reproduced just from a browser). Not sure what the feature install script could do in this case (besides at least checking the return code of curl stable :-). Maybe fallback to a known internal "stable" version?