create uzura project

.github/scripts/release.cjs

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+// @ts-check
+const fs = require("node:fs/promises");
+const crypto = require("node:crypto");
+
+/** actions/github-script でのリリース成果物のアップロード */
+module.exports = async function ({ image, version, github, context }) {
+  const { data: release } = await github.rest.repos.createRelease({
+    ...context.repo,
+    tag_name: `v${version.replace(/^v/i, "")}`,
+    prerelease: true,
+    generate_release_notes: true,
+  });
+  const target = {
+    ...context.repo,
+    release_id: release.id,
+  };
+  const name = `uzura-${version}-amd64.img.gz`;
+  const data = await fs.readFile(image);
+  await github.rest.repos.uploadReleaseAsset({ ...target, name, data });
+  const hash = crypto.createHash("sha256").update(data).digest("hex");
+  const body = `${release.body}
+
+## USB Flash Drive Image
+
+- ${name} (SHA256: \`${hash}\`)
+`;
+  await github.rest.repos.updateRelease({ ...target, body, prerelease: false });
+};

.github/workflows/release.yml

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+name: release
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: Specify version
+        required: true
+jobs:
+  main:
+    if: github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: sudo bin/build
+      - uses: actions/github-script@v6
+        with:
+          script: |
+            const release = require("./.github/scripts/release.cjs");
+            const image = "uzura-amd64.img.gz";
+            const version = process.env.UZURA_VERSION;
+            await release({ image, version, github, context });
+        env:
+          UZURA_VERSION: "${{ github.event.inputs.version }}"

.gitignore

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+dist
+*.img
+*.img.gz

LICENSE

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+Creative Commons Legal Code
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README.md

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+# Uzura
+
+Autoinstall USB Flash Drive イメージをビルドするためのツール群
+
+- Ubuntu Server (amd64) ベース
+- UEFI のみ対応
+
+## 使い方
+
+1. [Releases](https://github.com/kou029w/uzura/releases) からイメージをダウンロード
+2. イメージを USB Flash Drive に書き込む
+3. (必要に応じて) USB Flash Drive の中の user-data ファイルを編集して保存
+4. UEFI ブートオプションを変更し、起動
+
+## ライセンス
+
+イメージに含まれているソフトウェアの[ライセンス情報](https://packages.ubuntu.com/)をご参照ください。
+本リポジトリ内のソフトウェアは CC0-1.0 ライセンスです。

bin/build

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+#!/bin/sh
+# ビルド
+# Usage: bin/build
+# Required: rsync
+cd -- "$(dirname -- "$0")/.."
+set -eux
+rm -rf dist
+bin/download dist
+rsync -av src/ dist/
+bin/img-gen dist uzura-amd64.img

bin/download

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+#!/bin/sh
+# ベースイメージファイルのダウンロードと展開
+# Usage: bin/download dist
+# Required: xorriso wget
+set -eux
+version=22.04.1
+url="https://releases.ubuntu.com/${version}/ubuntu-${version}-live-server-amd64.iso"
+dist="$1"
+wget "${url}" -O base.iso
+xorriso -indev base.iso -osirrox on -extract / "${dist}"
+rm base.iso

bin/img-gen

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+#!/bin/sh
+# デバイスイメージファイルの生成
+# Usage: bin/img-gen source dist.img
+# Required: fallocate gzip losetup mkfs.fat parted rsync
+set -eux
+size=1.5G
+src="$1"
+image="$2"
+fallocate -l "${size}" "${image}"
+parted --script "${image}" \
+  mklabel gpt \
+  mkpart p1 0 100% \
+  set 1 esp on
+dev="$(losetup -f)"
+finally="losetup -d '${dev}'"
+trap 'sh -c "${finally}"' EXIT
+losetup -P "${dev}" "${image}"
+part="${dev}p1"
+mkfs.fat -n CIDATA "${part}"
+tmp="$(mktemp -d)"
+finally="rmdir '${tmp}'; ${finally}"
+mount "${part}" "${tmp}"
+finally="umount '${tmp}'; ${finally}"
+rsync -rtv "${src}/" "${tmp}/"
+finally="${finally}; gzip -f '${image}'"

src/boot/grub/grub.cfg

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+menuentry "Autoinstall" {
+	linux	/casper/vmlinuz autoinstall ds=nocloud-net ---
+	initrd	/casper/initrd
+}

src/user-data

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+#cloud-config
+# yaml-language-server: $schema=https://json.schemastore.org/ubuntu-server-autoinstall.json
+autoinstall:
+  version: 1
+  identity:
+    hostname: hostname
+    username: ubuntu
+    # Example password by `openssl passwd -6 ubuntu`
+    password: "$6$iGfCDHv5HM.ATvx2$2jO1Uf1do6mggo5nvbhB4/kEVwV.gAu8yKjGYHjcIHF.NAMFnXjFUtBW0RVPaxIDDe5yfQ4OXlzuwMBcReMAm/"
+  ssh:
+    install-server: true
+    allow-pw: false
+    authorized-keys:
+      # Example public key by `ssh-keygen -t ed25519`
+      - "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIG4AR5BAWlw5a9RzyTkYK9ApoTerpNg0qb3kMActUyvN"