[Flutter] カウンターアプリを Firebase Hosting で Web アプリとして動かす (Github Actions からデプロイ)

概要
チュートリアル
エラー
1. ! [remote rejected] main -> main (refusing to allow a Personal Access Token to create or update workflow .github/workflows/firebase-hosting-merge.yml without workflow scope)
まとめ
参考

概要

Firebase Hosting 上でカウンターアプリを動かす。

デプロイ方法はいくつかあるが、今回は Github Actions でデプロイする。

下記記事を大参考にさせていただきましたmm

【Flutter】Web アプリを🚀爆速🚀で Firebase Hosting にデプロイする

環境

Flutter 2.10.2

チュートリアル

Firebase プロジェクト準備

Firebase のコンソールより、Firebase プロジェクトを作成する。

今回は tutorial-firebase-github 。

Firebase CLI 準備

Firebase CLI をインストール。

brew install firebase-cli

Firebase に CLI からログインできることを確認。

firebase login

ブラウザで承認フローを完了すると以下の画面となる。

CLI より、上記で作ったプロジェクトが見れることを確認する。

firebase projects:list

Github リポジトリに Flutter プロジェクトをプッシュ

Github にリポジトリ作成（スクショは名前が重複しているため2に）。

Flutter プロジェクト作成。基本となるカウンターアプリ。

flutter create tutorial_firebase_github
cd tutorial_firebase_github

一度 git push までしておく。

git init
git add .
git commit -m "first commit"
git branch -M main
git remote add origin https://github.com/runble1/tutorial_firebase_github.git #自分の
git push -u origin main

Firebase 用 Github Actions 設定

Flutter と Firebase を連携する設定をしていく。

firebase init hosting

下記のように答えた。

firebase init hosting

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     ######    ##  ########  ######   ########  #########  ######  ######
     ##        ##  ##    ##  ##       ##     ## ##     ##       ## ##
     ##       #### ##     ## ######## ########  ##     ##  ######  ########

You're about to initialize a Firebase project in this directory:

  /Users/xxxx/private/flutter/TEST/Firebase/tutorial_firebase_github


=== Project Setup

First, let's associate this project directory with a Firebase project.
You can create multiple project aliases by running firebase use --add,
but for now we'll just set up a default project.

? Please select an option: Use an existing project
? Select a default Firebase project for this directory: tutorial-firebase-github (tutorial-firebase-github)
i  Using project tutorial-firebase-github (tutorial-firebase-github)

=== Hosting Setup

Your public directory is the folder (relative to your project directory) that
will contain Hosting assets to be uploaded with firebase deploy. If you
have a build process for your assets, use your build's output directory.

? What do you want to use as your public directory? build/web
? Configure as a single-page app (rewrite all urls to /index.html)? No
? Set up automatic builds and deploys with GitHub? Yes
✔  Wrote build/web/404.html
✔  Wrote build/web/index.html

i  Detected a .git folder at /Users/xxxx/private/flutter/TEST/Firebase/tutorial_firebase_github
i  Authorizing with GitHub to upload your service account to a GitHub repository's secrets store.

Visit this URL on this device to log in:

Build software better, together
GitHub is where people build software. More than 150 million people use GitHub to discover, fork, and contribute to over...
github.com

Waiting for authentication...

✔  Success! Logged into GitHub as runble1

? For which GitHub repository would you like to set up a GitHub workflow? (format: user/repository) runble1/tutorial_firebase_github

✔  Created service account github-action-461386344 with Firebase Hosting admin permissions.
✔  Uploaded service account JSON to GitHub as secret FIREBASE_SERVICE_ACCOUNT_TUTORIAL_FIREBASE_GITHUB.
i  You can manage your secrets at https://github.com/runble1/tutorial_firebase_github/settings/secrets.

? Set up the workflow to run a build script before every deploy? Yes
? What script should be run before every deploy? flutter build web

✔  Created workflow file /Users/xxxx/private/flutter/TEST/Firebase/tutorial_firebase_github/.github/workflows/firebase-hosting-pull-request.yml
? Set up automatic deployment to your site's live channel when a PR is merged? Yes
? What is the name of the GitHub branch associated with your site's live channel? main

✔  Created workflow file /Users/xxxx/private/flutter/TEST/Firebase/tutorial_firebase_github/.github/workflows/firebase-hosting-merge.yml

i  Action required: Visit this URL to revoke authorization for the Firebase CLI GitHub OAuth App:

Build software better, together
GitHub is where people build software. More than 150 million people use GitHub to discover, fork, and contribute to over...
github.com
i  Action required: Push any new workflow file(s) to your repo

i  Writing configuration info to firebase.json...
i  Writing project information to .firebaserc...

✔  Firebase initialization complete!

以下4つのファイルが新規作成される。

.firebaserc
.github/workflows/firebase-hosting-merge.yml
.github/workflows/firebase-hosting-pull-request.yml
firebase.json

このうち .github 配下の 2 ファイルは Github Actions の Workflow 設定ファイル。

この 2 つに以下を追記する。追記箇所はこちら参照。

     # Flutter のインストール
     - name: Install Flutter
        run: git clone https://github.com/flutter/flutter.git

      # PATH を通す
      - name: Add path
        run: echo "$(pwd)/flutter/bin" >> $GITHUB_PATH

      # パッケージのダウンロード
      - name: Download Flutter packages
        run: flutter pub get

これで準備完了。