educates-training-platform: Skill for Claude Code

Educates Kubernetes Version Upgrade Protocol

Upgrade Kubernetes version support based on $ARGUMENTS.

• If <new-version> is provided (e.g. 1.35), add support for that version.
• If --drop <old-version> is provided (e.g. --drop 1.31), remove that version.
• If no arguments, check https://www.downloadkubernetes.com/ for the latest stable versions and ask the user whether to keep 3 or 4 versions before proceeding.

We support versions for linux on amd64 and arm64 only.

Step 1: Gather Version Information

For the new kubectl version

1. Fetch checksums for both architectures:

   • https://dl.k8s.io/v{KUBECTL_VERSION}/kubernetes-client-linux-amd64.tar.gz.sha512
   • https://dl.k8s.io/v{KUBECTL_VERSION}/kubernetes-client-linux-arm64.tar.gz.sha512

   The full version string uses semantic versioning (e.g. 1.35.1). The short version is major.minor (e.g. 1.35).

2. Find the corresponding kind node image and SHA256 digest at https://github.com/kubernetes-sigs/kind/releases. Image format: kindest/node:v<K8S_VERSION>@sha256:<DIGEST>

Current versions

Read workshop-images/base-environment/Dockerfile to see which versions are currently installed and their RUN block format. Read client-programs/pkg/constants/kubernetes.go to see the current kind image map.

Step 2: Update All Files

You must update all of the following. Do not skip any.

workshop-images/base-environment/Dockerfile

Adding a new version — add a RUN <<EOF block following the existing pattern:

RUN <<EOF
    KUBECTL_VERSION=1.35.1
    KUBECTL_SHORT_VERSION=$(echo ${KUBECTL_VERSION} | cut -d. -f1,2)
    CHECKSUM_amd64="<sha512-for-amd64>"
    CHECKSUM_arm64="<sha512-for-arm64>"
    # ... rest of install block (copy from adjacent version block)
EOF

Removing an old version — delete the entire RUN <<EOF ... EOF block for that version.

Version mapping scripts (2 files with identical logic)

Update the case statement in both files to match the currently supported versions: