Add Docker testing instructions to README #23

	name: Java CI with Maven

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	build:
	runs-on: ubuntu-latest

	env:
	DB_HOST: localhost
	DB_PORT: 5432
	DB_NAME: testdb
	DB_USERNAME: ${{ secrets.DB_USERNAME }}
	DB_PASSWORD: ${{ secrets.DB_PASSWORD }}

	services:
	postgres:
	image: postgres:latest
	env:
	POSTGRES_DB: ${{ env.DB_NAME }}
	POSTGRES_USER: ${{ secrets.DB_USERNAME }}
	POSTGRES_PASSWORD: ${{ secrets.DB_PASSWORD }}
	ports:
	- 5432:5432
	options: >-
	--health-cmd="pg_isready"
	--health-interval=10s
	--health-timeout=5s
	--health-retries=5

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Set up JDK 17
	uses: actions/setup-java@v3
	with:
	java-version: '17'
	distribution: 'adopt'

	- name: Wait for PostgreSQL to be ready
	run: \|
	until pg_isready --host=localhost --port=5432 --username=${{ secrets.DB_USERNAME }}; do
	echo "Waiting for PostgreSQL to be ready..."
	sleep 5
	done

	- name: Create schema and initial setup
	env:
	PGPASSWORD: ${{ secrets.DB_PASSWORD }}
	run: \|
	psql -h localhost -U ${{ secrets.DB_USERNAME }} -d ${{ env.DB_NAME }} -c "CREATE SCHEMA IF NOT EXISTS leetcode;"

	- name: Build with Maven
	run: mvn clean install -DskipTests

	- name: Run tests
	run: mvn test -Dspring.profiles.active=test
	env:
	DB_HOST: localhost
	DB_PORT: 5432
	DB_NAME: testdb
	DB_USERNAME: ${{ secrets.DB_USERNAME }}
	DB_PASSWORD: ${{ secrets.DB_PASSWORD }}

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