feat: add `Express.js` app with basic CRUD functionality #7

	name: 3_middlewares_1_koa_js

	on:
	push:
	branches:
	- master
	paths:
	- 3_middlewares/1_koa_js/**
	workflow_dispatch:

	env:
	APP_NAME: middleware_koa_js
	PROJECT_DIR: 3_middlewares/1_koa_js

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/[email protected]

	- id: lower-credentials
	name: Lower Credentials
	run: \|
	echo "actor=${GITHUB_ACTOR@L}" >> $GITHUB_OUTPUT
	echo "repository=${GITHUB_REPOSITORY@L}" >> $GITHUB_OUTPUT

	- name: Login to GitHub Container Registry
	uses: docker/[email protected]
	with:
	registry: ghcr.io
	username: ${{ steps.lower-credentials.outputs.actor }}
	password: ${{ secrets.GHCR_PAT }}

	- name: Build Docker image
	run: \|
	cd ${{ env.PROJECT_DIR }} && \
	docker build -t ghcr.io/${{ steps.lower-credentials.outputs.repository }}/${{ env.APP_NAME }}:latest .

	- name: Push Docker image to GHCR
	run: \|
	docker push ghcr.io/${{ steps.lower-credentials.outputs.repository }}/${{ env.APP_NAME }}:latest

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