Use setup-bazel GHA for disk and repository caching #188

	# SPDX-License-Identifier: BSD-3-Clause

	name: Continuous Integration

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master

	jobs:
	bazel_test:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6
	- name: Install Ubuntu dependencies
	run: .github/ci_setup.bash
	# Use setup-bazel for caching.
	- uses: bazel-contrib/setup-bazel@0.15.0
	with:
	# Use the cached Bazelisk version, or download if not found.
	bazelisk-cache: true
	# Enable the disk cache and share it across all workflows
	# (i.e., across master and pull requests).
	# We want all builds to start from a warm cache, and we're not too
	# concerend about pull request builds "polluting" master builds.
	disk-cache: true
	# Share repository cache globally as well. If repository-cache is set to true,
	# it uses the hash of a few bazel files as the key for the cache. You can set
	# your own list of files to use to calculate the key by passing them below.
	# Passing an empty string tells setup-bazel to use the same key
	# every time, regardless of any changes to any files.
	repository-cache: ""
	# This dumps configuration details to the log.
	bazelrc: common --announce_rc=yes
	# Actual testing.
	- name: Bazel Test
	run: \|
	bazelisk test //...

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