Add new deploy workflow for gh-pages

.github/workflows/deploy.yml

@@ -0,0 +1,51 @@
+name: deploy-to-github-pages
+on:
+	push:
+		branches:
+			- main
+
+permissions:
+	contents: read
+	pages: write
+	id-token: write
+
+concurrency:
+	group: "pages"
+	cancel-in-progress: false
+
+jobs:
+	build:
+		runs-on: ubuntu-latest
+
+		steps:
+			- name: checkout
+				uses: actions/checkout@v4
+
+			- name: setup node/pnpm and install dependencies
+				uses: ./.github/workflows/setup-node-pnpm
+
+			- name: setup pages
+				uses: actions/configure-pages@v4
+				with:
+					static_site_generator: next
+
+			- name: build nextjs
+				run: npx next build
+
+			- name: upload
+				uses: actions/upload-pages-artifact@v3
+				with:
+					path: ./out
+
+	deploy:
+		environment:
+			name: github-pages
+			url: ${{ steps.deployment.outputs.page_url }}
+
+		runs-on: ubuntu-latest
+		needs: build
+
+		steps:
+			- name: publish to github pages
+				id: deployment
+				uses: actions/deploy-pages@v4

.github/workflows/setup-node-pnpm/action.yml

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+name: setup-node-pnpm
+description: "Setup node.js & install/cache dependencies with pnpm"
+runs:
+	using: composite
+
+	steps:
+		- name: setup node
+			uses: actions/setup-node@v4
+			with:
+				node-version: lts
+
+		- name: setup pnpm
+			uses: pnpm/action-setup@v3
+			with:
+				version: 8
+				run_install: false
+
+		- name: get pnpm store dir
+			shell: bash
+			run: |
+				echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
+
+		- name: cache dependencies in pnpm
+			with:
+				path: ${{ env.STORE_PATH }}
+				key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+				restore-keys: |
+					${{ runner.os }}-pnpm-store-
+
+		- name: install dependencies in pnpm
+			run: pnpm install