Docker Compose for Sonarcube and Postgres

docker-compose.yml

version: '3.3'
services:
    postgres:
        container_name: sonar-postgres
        environment:
            - POSTGRES_USER=sonar
            - POSTGRES_PASSWORD=sonar
        ports:
            - '5432:5432'
        networks:
            - mynet
        image: postgres
     sonarqube:
        container_name: sonarqube
        image: 'sonarqube:8.9.2-community'
        networks:
            - mynet
        ports:
            - '9000:9000'
            - '9092:9092'
        environment:
            - SONARQUBE_JDBC_USERNAME=sonar
            - SONARQUBE_JDBC_PASSWORD=sonar
            - 'SONARQUBE_JDBC_URL=jdbc:postgresql://sonar-postgres:5432/sonar'
        volumes:
            - data:/opt/sq/data
            - extensions:/opt/sonarqube/extensions
        
networks:
    mynet:
        external: false

volumes:
    data:
    extensions: