Add timeout and fallback for kubectl version fetching

Co-authored-by: abdurriq <[email protected]>

Author: Copilot

src/kubectl-helm-minikube/install.sh

@@ -154,10 +154,18 @@ if [ ${KUBECTL_VERSION} != "none" ]; then
     # Install the kubectl, verify checksum
     echo "Downloading kubectl..."
     if [ "${KUBECTL_VERSION}" = "latest" ] || [ "${KUBECTL_VERSION}" = "lts" ] || [ "${KUBECTL_VERSION}" = "current" ] || [ "${KUBECTL_VERSION}" = "stable" ]; then
-        KUBECTL_VERSION="$(curl -sSL https://dl.k8s.io/release/stable.txt)"
+        KUBECTL_VERSION="$(curl -fsSL --connect-timeout 10 --max-time 30 https://dl.k8s.io/release/stable.txt 2>/dev/null || echo "")"
+        if [ -z "${KUBECTL_VERSION}" ]; then
+            echo "(!) Failed to fetch kubectl stable version, falling back to version discovery via git tags"
+            find_version_from_git_tags KUBECTL_VERSION https://github.com/kubernetes/kubernetes
+        fi
     else
         find_version_from_git_tags KUBECTL_VERSION https://github.com/kubernetes/kubernetes
     fi
+    if [ -z "${KUBECTL_VERSION}" ] || [ "${KUBECTL_VERSION}" = "none" ]; then
+        echo "(!) Failed to determine kubectl version"
+        exit 1
+    fi
     if [ "${KUBECTL_VERSION::1}" != 'v' ]; then
         KUBECTL_VERSION="v${KUBECTL_VERSION}"
     fi