chore: add Cache-Control header #5

	name: CI
	on:
	push:
	branches:
	- 'main'
	jobs:
	# Test on various OS with default Go version.
	tests:
	name: Test on ${{matrix.os}}
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest]
	go-version: ['1.21.x']

	steps:
	- name: Install Go
	uses: actions/setup-go@v4
	with:
	go-version: ${{ matrix.go-version }}

	- name: Checkout code
	uses: actions/checkout@v3
	with:
	fetch-depth: 1

	- name: Print Go version
	run: go version

	- name: Get dependencies
	run: go get -v -t -d ./...

	- name: Run tests
	run: go test -v -failfast -tags=test -timeout="3m" -race ./...

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