Added Optimistic Concurrency exercise using ETag and conditional headers #79

	name: Workshops - Introduction to Event Sourcing

	on:
	# run it on push to the default repository branch
	push:
	branches: [main]
	paths:
	- "workshops/introduction_to_event_sourcing/**"
	# run it during pull request
	pull_request:
	paths:
	- "workshops/introduction_to_event_sourcing/**"

	defaults:
	run:
	# relative path to the place where source code (with package.json) is located
	working-directory: workshops/introduction_to_event_sourcing

	jobs:
	build-and-test-code:
	name: Build application code
	# use system defined below in the tests matrix
	runs-on: ${{ matrix.os }}

	strategy:
	# define the test matrix
	matrix:
	# selected operation systems to run CI
	os: [ubuntu-latest] #, windows-latest, macos-latest]
	# selected node version to run CI
	node-version: [20.10.x]

	steps:
	- name: Check Out Repo
	uses: actions/checkout@v4

	- name: Start containers
	run: docker-compose -f "docker-compose.yml" up -d

	- name: Use Node.js ${{ matrix.node-version }}
	uses: actions/setup-node@v4
	with:
	# use the node version defined in matrix above
	node-version: ${{ matrix.node-version }}

	- name: Install dependencies
	run: npm ci

	- name: Run linting (ESlint and Prettier)
	run: npm run lint

	- name: Build
	run: npm run build:ts

	- name: Test
	run: npm run test:solved

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