refactor: switch to ubuntu 26.04 lts

bootstrap.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env sh
+set -e
+
+err() { echo "$@" >&2; exit 1; }
+log() { echo "$@" >&2; }
+
+[ "$(id -u)" -ne 0 ] && err "You must run this script as root"
+
+# Install minimal packages for provisioning
+PACKAGES="dropbear openssh-sftp-server python3 py3-yaml py3-kubernetes cloud-utils-growpart e2fsprogs-extra lsblk"
+apk update && apk upgrade
+apk add ${PACKAGES}
+
+# increase root partition size
+root_dev=$(readlink -f /dev/root)
+disk=$(lsblk -no pkname "$root_dev")
+part_num=$(echo "$root_dev" | sed 's|.*[^0-9]||')
+
+echo "Growing /dev/${disk}${part_num}..."
+
+# Grow partition and resize
+growpart "/dev/$disk" "$part_num" || err "Partition growth failed"
+resize2fs "$root_dev" || err "Filesystem resize failed"