fix: improve CI cache #14

	---
	name: Run unit tests
	on:
	push:
	branches:
	- main
	pull_request:

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	env:
	# Location to store the bazelisk executable
	BAZELISK_BIN_DIR: .bazelisk-bin
	# Version of the bazelisk to use
	BAZELISK_VERSION: v1.19.0/bazelisk-linux-amd64

	jobs:
	unit-tests:
	runs-on: ubuntu-22.04
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	ref: ${{ github.head_ref }}
	- name: Try to restore build cache
	uses: actions/cache/store@v4
	with:
	path: .cache
	key: ${{ runner.os }}-build
	- name: Try to restore bazelisk binary
	id: cache-bazelisk-bin
	uses: actions/cache/store@v4
	with:
	path: ${{ env.BAZELISK_BIN_DIR }}
	key: ${{ env.BAZELISK_VERSION }}-bazelisk-bin
	- name: Install bazelisk if it's needed
	if: steps.cache-bazelisk-bin.outputs.cache-hit != 'true'
	run: \|
	wget https://github.com/bazelbuild/bazelisk/releases/download/${{ env.BAZELISK_VERSION }} \
	-O "${{ env.BAZELISK_BIN_DIR }}/bazelisk"
	chmod +x "${{ env.BAZELISK_BIN_DIR }}/bazelisk"
	- name: Save bazelisk binary
	uses: actions/cache/save@v4
	if: steps.cache-bazelisk-bin.outputs.cache-hit != 'true'
	with:
	path: ${{ env.BAZELISK_BIN_DIR }}
	key: ${{ env.BAZELISK_VERSION }}-bazelisk-bin
	- name: Add bazelisk to PATH
	run: echo "${{ env.BAZELISK_BIN_DIR }}" >> "${GITHUB_PATH}"
	- name: Run unit tests
	run: ./execute_tests.bash
	- name: Save build cache
	uses: actions/cache/save@v4
	with:
	path: .cache
	key: ${{ runner.os }}-build

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