feat(image): add kubectl and jq for kpack builds

Install kubectl and jq in the runner image so green ARC runners can manage
in-cluster kpack Build CRs and run the git-token refresher CronJob.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: miragecentury

.cursorignore

@@ -0,0 +1,15 @@
+.venv/
+node_modules/
+**/__pycache__/
+**/.mypy_cache/
+**/.pytest_cache/
+**/.ruff_cache/
+build/
+dist/
+.env
+*.pem
+*.key
+poetry.lock
+package-lock.json
+
+build/

Containerfile

@@ -18,6 +18,7 @@ RUN apt-get update \
        python3.12 python3.12-dev \
        python3.13 python3.13-dev \
        skopeo buildah \
+       jq \
        unzip \
     && apt-get autoremove -y \
     && apt-get clean \
@@ -102,6 +103,12 @@ RUN curl -sSL -o /usr/local/bin/kargo \
       "https://github.com/akuity/kargo/releases/download/v${KARGO_VERSION}/kargo-linux-amd64" \
     && chmod +x /usr/local/bin/kargo
 
+# Install kubectl (in-cluster kpack Build CRs from green ARC runners)
+ARG KUBECTL_VERSION=1.33.2
+RUN curl -sSL -o /usr/local/bin/kubectl \
+      "https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/amd64/kubectl" \
+    && chmod +x /usr/local/bin/kubectl
+
 # Install pack (Cloud Native Buildpacks CLI)
 ARG PACK_VERSION=0.40.2
 RUN curl -sSL -o /tmp/pack.tgz \

README.md

@@ -22,6 +22,8 @@ Container image based on the [GitHub Actions Runner](https://github.com/actions/
 |------|-------------|
 | [Argo Workflows CLI](https://github.com/argoproj/argo-workflows) | Workflow orchestration on Kubernetes |
 | [Kargo CLI](https://github.com/akuity/kargo) | Application lifecycle orchestration |
+| [kubectl](https://kubernetes.io/docs/reference/kubectl/) | Kubernetes CLI (in-cluster kpack builds from green ARC runners) |
+| [jq](https://jqlang.org/) | JSON processor (kpack git-token refresher CronJob) |
 | [pack](https://github.com/buildpacks/pack) | Cloud Native Buildpacks CLI |
 | [skopeo](https://github.com/containers/skopeo) | Container image registry operations |
 | [Node.js](https://nodejs.org/) / npm | JavaScript runtime and package manager (npm/npx bundled) |