ci: add container build workflow for fork #58

	---
	# Rust-specific CI tasks, mostly adapted from Penumbra monorepo.
	name: Rust CI
	on: pull_request

	jobs:
	test:
	name: Test Suite
	runs-on: buildjet-16vcpu-ubuntu-2204
	steps:
	- uses: actions/checkout@v4
	with:
	lfs: true

	- name: Install rust toolchain
	uses: dtolnay/rust-toolchain@stable
	with:
	targets: wasm32-unknown-unknown

	- name: Install nextest
	uses: taiki-e/install-action@nextest

	- name: Load rust cache
	uses: astriaorg/buildjet-rust-cache@v2.5.1

	- name: Run cargo check, failing on warnings
	run: cargo check --release --all-targets
	env:
	# The `-D warnings` option causes an error on warnings;
	# we must duplicate the rustflags from `.cargo/config.toml`.
	RUSTFLAGS: "-D warnings --cfg tokio_unstable"

	# If a dependency was modified, Cargo.lock may flap if not committed.
	- name: Check for diffs
	shell: bash
	run: \|
	s="$(git status --porcelain)"
	if [[ -n "$s" ]]; then
	echo "ERROR: found modified files that should be committed:"
	echo "$s"
	git diff \| head -n 128
	exit 1
	else
	echo "OK: no uncommitted changes detected"
	fi

	# We run only the 'ibc-relayer' tests, because that's where the
	# Penumbra-specific changes have been added.
	- name: Run tests with nextest
	run: cargo nextest run --release -p ibc-relayer
	env:
	CARGO_TERM_COLOR: always

	fmt:
	name: Rustfmt
	runs-on: buildjet-8vcpu-ubuntu-2204
	steps:
	- uses: actions/checkout@v4
	- name: Install rust toolchain
	uses: dtolnay/rust-toolchain@stable
	with:
	components: rustfmt
	- name: Load rust cache
	uses: astriaorg/buildjet-rust-cache@v2.5.1
	- run: cargo fmt --all -- --check

Provide feedback