我在GitHub仓库中有以下分支：

• main（这里没有，只有一个README.md文件）
• branch1-一个NextJS项目，其中包含一个.github/workflows文件夹，可以在运行时将项目部署到GitHub Pages。
• branch2-一个包含不同内容的静态html网站。

我希望使用GitHub Actions将branch1部署在https://username.github.io/repo-name/上，并将branch2作为静态站点部署在https://username.github.io/repo-name/branch2/上。
我该怎么做，如何开始？
PS：YAML操作将生成的静态HTML（来自npm run export）推送到自动创建的gh-pages分支，并使用gh-pages -d ./out命令进行部署。它工作得非常好。
编辑：我可能有一个想法，但我不确定如何开始实现它。每当运行gh-pages -d ./out命令时，GitHub都会从gh-page分支部署我的站点。所以，也许我可以在我的仓库的页面设置下将“Deploy from branch”设置为gh-page，然后在branch2中，我可以编写一个自定义的YAML GitHub Action，以便每当对静态HTML进行更改并推送时，它将复制整个分支（分支中也有CSS和JS子文件夹）转移到gh-page分支中一个名为branch2的文件夹中。但是每当branch1有推送时，该文件夹就会被删除，由于gh-pages -d ./out命令正在运行。所以也许可以编辑NextJS部署脚本，使其在部署时不会删除branch2文件夹？同时更改静态HTML部署脚本，使其不会在每次更改时复制整个分支，而是只复制更改的文件/行。但这会不会太复杂？
EDIT 2：这是我的工作流程脚本。

# Sample workflow for building and deploying a Next.js site to GitHub Pages
#
# To get started with Next.js see: https://nextjs.org/docs/getting-started
#
name: Deploy Next.js site to Pages

on:
  # Runs on pushes targeting the default branch
  push:
    branches: ["nextjs"]     # This is my "branch1"

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
permissions:
  contents: read
  pages: write
  id-token: write

# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
concurrency:
  group: "pages"
  cancel-in-progress: false

jobs:
  # Build job
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Detect package manager
        id: detect-package-manager
        run: |
          if [ -f "${{ github.workspace }}/yarn.lock" ]; then
            echo "manager=yarn" >> $GITHUB_OUTPUT
            echo "command=install" >> $GITHUB_OUTPUT
            echo "runner=yarn" >> $GITHUB_OUTPUT
            exit 0
          elif [ -f "${{ github.workspace }}/package.json" ]; then
            echo "manager=npm" >> $GITHUB_OUTPUT
            echo "command=ci" >> $GITHUB_OUTPUT
            echo "runner=npx --no-install" >> $GITHUB_OUTPUT
            exit 0
          else
            echo "Unable to determine package manager"
            exit 1
          fi
      - name: Setup Node
        uses: actions/setup-node@v3
        with:
          node-version: "16"
          cache: ${{ steps.detect-package-manager.outputs.manager }}
      - name: Setup Pages
        uses: actions/configure-pages@v3
        with:
          # Automatically inject basePath in your Next.js configuration file and disable
          # server side image optimization (https://nextjs.org/docs/api-reference/next/image#unoptimized).
          #
          # You may remove this line if you want to manage the configuration yourself.
          static_site_generator: next
      - name: Restore cache
        uses: actions/cache@v3
        with:
          path: |
            .next/cache
          # Generate a new cache whenever packages or source files change.
          key: ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json', '**/yarn.lock') }}-${{ hashFiles('**.[jt]s', '**.[jt]sx') }}
          # If source files changed but packages didn't, rebuild from a prior cache.
          restore-keys: |
            ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json', '**/yarn.lock') }}-
      - name: Install dependencies
        run: ${{ steps.detect-package-manager.outputs.manager }} ${{ steps.detect-package-manager.outputs.command }} && cd about-me && npm i && cd ..
      - name: Build with Next.js
        run: cd about-me && ${{ steps.detect-package-manager.outputs.runner }} next build && cd ..
      - name: Static HTML export with Next.js
        run: cd about-me && ${{ steps.detect-package-manager.outputs.runner }} next export && cd ..
      - name: Upload artifact
        uses: actions/upload-pages-artifact@v1
        with:
          path: ./about-me/out

  # Deployment job
  deploy:
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v2

网站目前运行良好，没有问题。注意我的分支名称在第10行。