Add recipe: an introduction to custom ops #33

	name: CI

	on:
	workflow_dispatch:
	push:
	branches:
	- main
	paths-ignore:
	- '*/.md'
	- '*/.png'
	- '*/.jpg'
	- '*/.jpeg'
	- '*/.gif'
	- 'LICENSE'
	- 'CODE_OF_CONDUCT.md'
	pull_request:
	branches:
	- main
	paths-ignore:
	- '*/.md'
	- '*/.png'
	- '*/.jpg'
	- '*/.jpeg'
	- '*/.gif'
	- 'LICENSE'
	- 'CODE_OF_CONDUCT.md'

	jobs:
	validate-and-test:
	name: Validate and Test
	runs-on: ubuntu-latest
	container:
	image: amd64/ubuntu:latest
	steps:
	- name: Install prerequisites
	run: \|
	apt-get update
	apt-get install -y curl git

	- name: Install Magic CLI
	shell: bash
	run: \|
	curl -ssL https://magic.modular.com/ \| bash
	. /root/.bashrc
	echo "/root/.modular/bin" >> $GITHUB_PATH
	export PATH="/root/.modular/bin:$PATH"

	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Run Metadata Validation
	shell: bash
	run: \|
	source /root/.bashrc
	$HOME/.modular/bin/magic run lint

	- name: Get changed directories
	id: changed-dirs
	run: \|
	if [ "${{ github.event_name }}" == "pull_request" ]; then
	CHANGED_DIRS=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.sha }} \| grep -v '^\.github/' \| cut -d'/' -f1 \| sort -u \| tr '\n' ' ')
	else
	CHANGED_DIRS=$(git diff --name-only ${{ github.event.before }} ${{ github.sha }} \| grep -v '^\.github/' \| cut -d'/' -f1 \| sort -u \| tr '\n' ' ')
	fi
	echo "Changed directories: $CHANGED_DIRS"
	echo "dirs=$CHANGED_DIRS" >> $GITHUB_OUTPUT

	- name: Run Tests
	if: steps.changed-dirs.outputs.dirs != ''
	shell: bash
	run: \|
	source /root/.bashrc
	$HOME/.modular/bin/magic run test ${{ steps.changed-dirs.outputs.dirs }}

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