Add Ubuntu 26.04 cloud image

Download the Ubuntu 26.04 LTS server cloud image (release 20260927) for amd64 and arm64 from the TUNA, NJU and official mirrors, verified with the pinned SHA256 checksums from the release's SHA256SUMS. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Kwxp2XWvKnuEBifnCbhyX5
2026-10-15 09:00:08 +08:00
1 parent 5ba114f5ad
commit 6286495d27
@@ -18,6 +18,7 @@ Download or check selected targets:
 ./download-images.sh debian13
 ./download-images.sh almalinux10
 ./download-images.sh fedora44
+./download-images.sh ubuntu2604
 ./download-images.sh virtio-win
 ```

@@ -36,6 +37,7 @@ The path interface prints one absolute path without downloading anything:
 ./download-images.sh --print-path debian13
 ./download-images.sh --print-path almalinux10
 ./download-images.sh --print-path fedora44
+./download-images.sh --print-path ubuntu2604
 ./download-images.sh --print-path virtio-win
 ./download-images.sh --print-path windows11
 ./download-images.sh --print-path windows11 --iso
@@ -48,13 +50,14 @@ ISO (for example `Win11_25H2_English_x64_v2.iso` →
 existing `*Win*11*x64*.qcow2` in `base-qcow2/` is used instead.

 Download URLs can be overridden with `DEBIAN_IMAGE_URL`, `ALMA_IMAGE_URL`,
-`FEDORA_IMAGE_URL`, and `VIRTIO_WIN_ISO_URL`. Each may list several mirrors of
-the same file, separated by whitespace; the Fedora image defaults to the TUNA,
-BFSU and NJU mirrors.
+`FEDORA_IMAGE_URL`, `UBUNTU_IMAGE_URL`, and `VIRTIO_WIN_ISO_URL`. Each may
+list several mirrors of the same file, separated by whitespace; the Fedora
+image defaults to the TUNA, BFSU and NJU mirrors, and the Ubuntu image to the
+TUNA, NJU and official cloud-images.ubuntu.com mirrors.

 When [aria2](https://aria2.github.io/) is installed (`aria2c`), an image is
 downloaded from all of its mirrors at once, with a single connection to each
 mirror. Without it, `curl` (or `wget`) tries the mirrors in order. A partial
 download is only resumed with the same downloader and mirror list; otherwise
-it starts over. The Fedora checksum can be
-overridden with `FEDORA_IMAGE_SHA256` when using a custom image.
+it starts over. The Fedora and Ubuntu checksums can be overridden with
+`FEDORA_IMAGE_SHA256` and `UBUNTU_IMAGE_SHA256` when using a custom image.
@@ -19,11 +19,16 @@ if [[ "$image_arch" == arm64 ]]; then
  debian_image="${base_qcow2_dir}/debian-13-generic-arm64-20260810-2566.qcow2"
  alma_image="${base_qcow2_dir}/AlmaLinux-10-GenericCloud-10.2-20260526.0.aarch64.qcow2"
  fedora_image="${base_qcow2_dir}/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2"
+  ubuntu_image="${base_qcow2_dir}/ubuntu-26.04-server-cloudimg-arm64-20260927.img"
  debian_url_default="https://cloud.debian.org/images/cloud/trixie/20260810-2566/debian-13-generic-arm64-20260810-2566.qcow2"
  alma_url_default="https://repo.almalinux.org/almalinux/10/cloud/aarch64/images/AlmaLinux-10-GenericCloud-10.2-20260526.0.aarch64.qcow2"
  fedora_url_default="https://mirrors.tuna.tsinghua.edu.cn/fedora/releases/44/Cloud/aarch64/images/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2
    https://mirrors.bfsu.edu.cn/fedora/releases/44/Cloud/aarch64/images/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2
    https://mirrors.nju.edu.cn/fedora/releases/44/Cloud/aarch64/images/Fedora-Cloud-Base-Generic-44-1.7.aarch64.qcow2"
+  ubuntu_url_default="https://mirrors.tuna.tsinghua.edu.cn/ubuntu-cloud-images/resolute/20260927/resolute-server-cloudimg-arm64.img
+    https://mirrors.nju.edu.cn/ubuntu-cloud-images/releases/26.04/release-20260927/ubuntu-26.04-server-cloudimg-arm64.img
+    https://cloud-images.ubuntu.com/releases/26.04/release-20260927/ubuntu-26.04-server-cloudimg-arm64.img"
+  ubuntu_sha256_default="63a93bd5a8d76e33b15ceb5daa3657bd79be804748051ab178e643b0f5da22e7"
  # TODO: these were pinned for the amd64/x86_64 builds; verification is
  # skipped (empty default) for the arm64/aarch64 builds until their
  # checksums are fetched and pinned via DEBIAN_IMAGE_SHA512 /
@@ -35,14 +40,19 @@ else
  debian_image="${base_qcow2_dir}/debian-13-generic-amd64-20260810-2566.qcow2"
  alma_image="${base_qcow2_dir}/AlmaLinux-10-GenericCloud-10.2-20260526.0.x86_64.qcow2"
  fedora_image="${base_qcow2_dir}/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2"
+  ubuntu_image="${base_qcow2_dir}/ubuntu-26.04-server-cloudimg-amd64-20260927.img"
  debian_url_default="https://cloud.debian.org/images/cloud/trixie/20260810-2566/debian-13-generic-amd64-20260810-2566.qcow2"
  alma_url_default="https://repo.almalinux.org/almalinux/10/cloud/x86_64/images/AlmaLinux-10-GenericCloud-10.2-20260526.0.x86_64.qcow2"
  fedora_url_default="https://mirrors.tuna.tsinghua.edu.cn/fedora/releases/44/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2
    https://mirrors.bfsu.edu.cn/fedora/releases/44/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2
    https://mirrors.nju.edu.cn/fedora/releases/44/Cloud/x86_64/images/Fedora-Cloud-Base-Generic-44-1.7.x86_64.qcow2"
+  ubuntu_url_default="https://mirrors.tuna.tsinghua.edu.cn/ubuntu-cloud-images/resolute/20260927/resolute-server-cloudimg-amd64.img
+    https://mirrors.nju.edu.cn/ubuntu-cloud-images/releases/26.04/release-20260927/ubuntu-26.04-server-cloudimg-amd64.img
+    https://cloud-images.ubuntu.com/releases/26.04/release-20260927/ubuntu-26.04-server-cloudimg-amd64.img"
  debian_sha512_default="f6978100d8031c266d55d7815ceea7fcdeacf28e1e5834fdb9c94ac96880a054a6e6f8681c2d3b0584e0057eaf3ef7353856b85212d04134744faa9b3bb1f24f"
  alma_sha256_default="47f2218668dd4776be140dd92fa3bea700be1766e2c7d88bdfd6a4b50f477b4d"
  fedora_sha256_default="28680fe5b371a5a82ebf43a31926e086a168e59949d03969c5093e7071f90b7f"
+  ubuntu_sha256_default="8800651811af9a85465ad1d552add729947bb16488dddb4a9b5305a3d97332b2"
 fi

 virtio_image="${tools_iso_dir}/virtio-win.iso"
@@ -89,19 +99,21 @@ windows_qcow2_path() {
 debian_url="${DEBIAN_IMAGE_URL:-$debian_url_default}"
 alma_url="${ALMA_IMAGE_URL:-$alma_url_default}"
 fedora_url="${FEDORA_IMAGE_URL:-$fedora_url_default}"
+ubuntu_url="${UBUNTU_IMAGE_URL:-$ubuntu_url_default}"
 virtio_url="${VIRTIO_WIN_ISO_URL:-https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso}"
 debian_sha512="${DEBIAN_IMAGE_SHA512:-$debian_sha512_default}"
 alma_sha256="${ALMA_IMAGE_SHA256:-$alma_sha256_default}"
 fedora_sha256="${FEDORA_IMAGE_SHA256:-$fedora_sha256_default}"
+ubuntu_sha256="${UBUNTU_IMAGE_SHA256:-$ubuntu_sha256_default}"
 force_download=false

 usage() {
  cat <<EOF
-Usage: $(basename "$0") [--force] [all|debian13|almalinux10|fedora44|virtio-win] ...
+Usage: $(basename "$0") [--force] [all|debian13|almalinux10|fedora44|ubuntu2604|virtio-win] ...
       $(basename "$0") --print-path TARGET [--iso]

 Download one or more shared VM images. With no arguments, all targets are
-processed. The Debian/AlmaLinux/Fedora image architecture (arm64 or amd64)
+processed. The Debian/AlmaLinux/Fedora/Ubuntu image architecture (arm64 or amd64)
 is auto-detected from the host; override it with VM_IMAGE_ARCH.

 When aria2c is installed and an image has several mirrors, the image is
@@ -125,6 +137,7 @@ print_image_path() {
    debian13) printf '%s\n' "$debian_image" ;;
    almalinux10) printf '%s\n' "$alma_image" ;;
    fedora44) printf '%s\n' "$fedora_image" ;;
+    ubuntu2604) printf '%s\n' "$ubuntu_image" ;;
    virtio-win) printf '%s\n' "$virtio_image" ;;
    windows11)
      if [[ "$media" == iso ]]; then
@@ -171,7 +184,7 @@ fi

 for target in "${targets[@]}"; do
  case "$target" in
-    all|debian13|almalinux10|fedora44|virtio-win) ;;
+    all|debian13|almalinux10|fedora44|ubuntu2604|virtio-win) ;;
    -h|--help) usage; exit 0 ;;
    *) printf 'Error: unknown download target: %s\n' "$target" >&2; usage >&2; exit 2 ;;
  esac
@@ -378,6 +391,15 @@ if wants_target fedora44; then
    "$fedora_sha256"
 fi

+if wants_target ubuntu2604; then
+  download_file \
+    'Ubuntu 26.04 cloud image' \
+    "$ubuntu_url" \
+    "$ubuntu_image" \
+    sha256 \
+    "$ubuntu_sha256"
+fi
+
 if wants_target virtio-win; then
  download_file \
    'VirtIO Windows tools ISO' \