auto compute task id and remove provided_id #73

	name: Lint

	on: [push]

	jobs:
	build:
	runs-on: self-hosted
	steps:
	- uses: actions/checkout@v3
	# on self-hosted runner, we already pre-installed the rust toolchain
	- name: Format the code with rust fmt
	id: cargo_fmt
	run: \|
	cargo fmt
	if [ -z "$(git diff .)" ]; then
	echo code format ok
	echo "need_format=false" >> "$GITHUB_OUTPUT"
	else
	echo "need_format=true" >> "$GITHUB_OUTPUT"
	fi

	- name: Format the code
	if: steps.cargo_fmt.outputs.need_format == 'true'
	run: \|
	git config --global user.name 'oak-code-formatter'
	git config --global user.email '[email protected]'
	git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/$GITHUB_REPOSITORY
	git checkout $GITHUB_HEAD_REF
	git commit -am "fixup: auto format Rust code"
	git push

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