build

ci: use day for cache key #11

	name: build
	on:
	push:
	branches:
	- main
	pull_request:
	workflow_dispatch:

	jobs:
	build:
	name: Build
	runs-on: ubuntu-20.04
	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	## To avoid the trivy-db becoming outdated, we save the cache for one day
	- name: Get data
	id: date
	run: echo "CACHE_DATE=$(date +%Y-%m-%d)" >> $GITHUB_ENV

	- name: Restore trivy cache
	uses: actions/cache@v4
	with:
	path: cache/db
	key: trivy-cache-${{ env.CACHE_DATE }}
	restore-keys:
	trivy-cache-

	- name: Run Trivy vulnerability scanner in fs mode
	uses: aquasecurity/trivy-action@0.24.0
	with:
	scan-type: 'fs'
	scan-ref: '.'
	cache-dir: "./cache"

	## Trivy-db uses `0600` permissions.
	## But `action/cache` use `runner` user by default
	## So we need to change the permissions before caching the database.
	- name: change permissions for trivy.db
	run: sudo chmod 0644 ./cache/db/trivy.db

Provide feedback