add image optimization (#30) #43

	name: Deploy to GitHub Pages

	on:
	push:
	branches:
	- main
	workflow_dispatch:

	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
	uses: actions/setup-node@v4
	with:
	node-version: '20'
	cache: 'npm'

	- name: Install dependencies
	run: npm ci

	- name: Build with Next.js
	run: npm run build
	env:
	NODE_ENV: production

	- name: Optimize images
	continue-on-error: true
	run: \|
	sudo apt-get install -y jpegoptim optipng gifsicle webp
	find out/images -type f $ -iname ".jpg" -o -iname ".jpeg" $ -exec jpegoptim --strip-all --max=85 {} \;
	find out/images -type f -iname "*.png" -exec optipng -o2 {} \;
	find out/images -type f -iname "*.gif" -exec gifsicle --batch -O3 {} \;

	- name: Upload artifact
	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: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v4

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