Developers are always concerned about their code quality. And they try their best to ensure the best quality of their code. If they find some tools that can show them exactly where they need to make changes to improve the quality of the code. There are many of them, but I will explain how you can set up SonarQube locally with docker so that you can evaluate your project code quality. Without wasting any time let’s begin. Prerequisite You must have docker installed in your system. If you don’t have it installed, then please feel free to set up Docker using this link. Docker Container On your root project, create a docker-compose.yml file, and then we will need a database so that Sonarqube can store its analytical data. postgres:
    image: postgres
    restart: always
    environment:
      POSTGRES_PASSWORD: example
    networks:
      - lookup
    ports:
      - 5432:5432
    volumes:
      - postgres:/var/lib/postgresql/data After that, we will need Sonarqube service, sonarqube:
    image: sonarqube:latest
    restart: always
    ports:
      - 9000:9000
    environment:
      SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres
      SONARQUBE_JDBC_USERNAME: postgres
      SONARQUBE_JDBC_PASSWORD: example
    networks:
      - lookup
    depends_on:
      - postgres Don’t worry; I will explain each line. sonarqube:
This defines a service in your Docker Compose file. The name of the service is sonarqube, meaning that this section is describing how the SonarQube container will run.


image: sonarqube:latest
This specifies the Docker image to use for the SonarQube service. In this case, it pulls the latest version of the official SonarQube image from Docker Hub.


restart: always
This ensures that the SonarQube container will automatically restart if it crashes or if the Docker host is rebooted.


ports:
- 9000:9000:
This maps port 9000 on the host machine to port 9000 inside the container. SonarQube’s web interface runs on port 9000, so this makes it accessible from the host machine's browser at http://localhost:9000.


SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres
Defines the JDBC URL to connect SonarQube to a PostgreSQL database.


SONARQUBE_JDBC_USERNAME: postgres:
The username used to authenticate with the PostgreSQL database. In this case, it's postgres.


SONARQUBE_JDBC_PASSWORD: example:
The password used to authenticate the PostgreSQL database, set to example. The final version of our docker-compose.yml file will be the following services:
  postgres:
    image: postgres
    restart: always
    environment:
      POSTGRES_PASSWORD: example
    networks:
      - lookup
    ports:
      - 5432:5432
    volumes:
      - postgres:/var/lib/postgresql/data

  sonarqube:
    image: sonarqube:latest
    restart: always
    ports:
      - 9000:9000
    environment:
      SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres
      SONARQUBE_JDBC_USERNAME: postgres
      SONARQUBE_JDBC_PASSWORD: example
    networks:
      - lookup
    depends_on:
      - postgres

networks:
  lookup:

volumes:
  postgres:
    driver: local Inside your project directory, open a terminal, and to start and run the services do docker-compose up . Setup SonarQube Once the services are running on a browser, go to localhost:9000, and it will open the Sonarqube log-in page. The default username and password is admin. Once you are logged in, it will ask you to set up a new password. After completing these steps, you will be able to see the Sonarqube dashboard. As we are running the Sonarqube locally, we will create a local project. In the below, you will see the marked section that you have to click. It will ask for a project name and a branch name. I will leave the branch name as main. You can choose any branch that you have and create a project. Then we will see a new section where we have to choose Use the global setting  for now. Once we click on  create project, it should ask to generate a token. I will only update the Expires in section and make it to No Expiration. Once we generate a token, it will ask us to select our project coding language; after choosing that, we need to download the scanner zip folder. I have marked the section where you will find it below. Let’s unzip the folder and open the folder; you will find the bin folder, and inside, you will find a sonar-scanner file. Copy the path of that file, and save it in a text file. ~./sonar-scanner-cli-6.1.0.4477-linux-x64/sonar-scanner-6.1.0.4477-linux-x64/bin After that, you need to copy the command given in the Execute the Scanner section. Once you copy that, then concat with the path that you have saved in the file as shown below. ~./sonar-scanner-cli-6.1.0.4477-linux-x64/sonar-scanner-6.1.0.4477-linux-x64/bin/sonar-scanner \
   -Dsonar.projectKey=demo   \
   -Dsonar.sources=.   \
   -Dsonar.host.url=http://localhost:9000   \
   -Dsonar.token=<Your_Token> Once you execute the command in the terminal, it will start analyzing your code. Once it finishes the operation, you should see some analytical information in the Sonarqube dashboard. And then, you should be able to see some metrics, and if you have any issues, you should be able to see the reasons for marking it as an issue. Great, we have completed the setup of our Sonarqube on our project locally. Developers are always concerned about their code quality. And they try their best to ensure the best quality of their code. If they find some tools that can show them exactly where they need to make changes to improve the quality of the code. There are many of them, but I will explain how you can set up SonarQube locally with docker so that you can evaluate your project code quality. Without wasting any time let’s begin. Prerequisite You must have docker installed in your system. If you don’t have it installed, then please feel free to set up Docker using this link . link Docker Container On your root project, create a docker-compose.yml file, and then we will need a database so that Sonarqube can store its analytical data. postgres:
    image: postgres
    restart: always
    environment:
      POSTGRES_PASSWORD: example
    networks:
      - lookup
    ports:
      - 5432:5432
    volumes:
      - postgres:/var/lib/postgresql/data postgres:
    image: postgres
    restart: always
    environment:
      POSTGRES_PASSWORD: example
    networks:
      - lookup
    ports:
      - 5432:5432
    volumes:
      - postgres:/var/lib/postgresql/data After that, we will need Sonarqube service, sonarqube:
    image: sonarqube:latest
    restart: always
    ports:
      - 9000:9000
    environment:
      SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres
      SONARQUBE_JDBC_USERNAME: postgres
      SONARQUBE_JDBC_PASSWORD: example
    networks:
      - lookup
    depends_on:
      - postgres sonarqube:
    image: sonarqube:latest
    restart: always
    ports:
      - 9000:9000
    environment:
      SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres
      SONARQUBE_JDBC_USERNAME: postgres
      SONARQUBE_JDBC_PASSWORD: example
    networks:
      - lookup
    depends_on:
      - postgres Don’t worry; I will explain each line. sonarqube:
This defines a service in your Docker Compose file. The name of the service is sonarqube, meaning that this section is describing how the SonarQube container will run. image: sonarqube:latest
This specifies the Docker image to use for the SonarQube service. In this case, it pulls the latest version of the official SonarQube image from Docker Hub. restart: always
This ensures that the SonarQube container will automatically restart if it crashes or if the Docker host is rebooted. ports:
- 9000:9000:
This maps port 9000 on the host machine to port 9000 inside the container. SonarQube’s web interface runs on port 9000, so this makes it accessible from the host machine's browser at http://localhost:9000. SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres
Defines the JDBC URL to connect SonarQube to a PostgreSQL database. SONARQUBE_JDBC_USERNAME: postgres:
The username used to authenticate with the PostgreSQL database. In this case, it's postgres. SONARQUBE_JDBC_PASSWORD: example:
The password used to authenticate the PostgreSQL database, set to example. sonarqube: This defines a service in your Docker Compose file. The name of the service is sonarqube, meaning that this section is describing how the SonarQube container will run. sonarqube: sonarqube: This defines a service in your Docker Compose file. The name of the service is sonarqube , meaning that this section is describing how the SonarQube container will run. sonarqube image: sonarqube:latest This specifies the Docker image to use for the SonarQube service. In this case, it pulls the latest version of the official SonarQube image from Docker Hub. image: sonarqube:latest image: sonarqube:latest This specifies the Docker image to use for the SonarQube service. In this case, it pulls the latest version of the official SonarQube image from Docker Hub. restart: always This ensures that the SonarQube container will automatically restart if it crashes or if the Docker host is rebooted. restart: always restart: always This ensures that the SonarQube container will automatically restart if it crashes or if the Docker host is rebooted. ports: - 9000:9000: This maps port 9000 on the host machine to port 9000 inside the container. SonarQube’s web interface runs on port 9000, so this makes it accessible from the host machine's browser at http://localhost:9000. ports: ports: - 9000:9000 : - 9000:9000 This maps port 9000 on the host machine to port 9000 inside the container. SonarQube’s web interface runs on port 9000, so this makes it accessible from the host machine's browser at http://localhost:9000 . http://localhost:9000 SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres Defines the JDBC URL to connect SonarQube to a PostgreSQL database. SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres Defines the JDBC URL to connect SonarQube to a PostgreSQL database. SONARQUBE_JDBC_USERNAME: postgres: The username used to authenticate with the PostgreSQL database. In this case, it's postgres. SONARQUBE_JDBC_USERNAME: postgres : SONARQUBE_JDBC_USERNAME: postgres The username used to authenticate with the PostgreSQL database. In this case, it's postgres . postgres SONARQUBE_JDBC_PASSWORD: example: The password used to authenticate the PostgreSQL database, set to example. SONARQUBE_JDBC_PASSWORD: example : SONARQUBE_JDBC_PASSWORD: example The password used to authenticate the PostgreSQL database, set to example . example The final version of our docker-compose.yml file will be the following services:
  postgres:
    image: postgres
    restart: always
    environment:
      POSTGRES_PASSWORD: example
    networks:
      - lookup
    ports:
      - 5432:5432
    volumes:
      - postgres:/var/lib/postgresql/data

  sonarqube:
    image: sonarqube:latest
    restart: always
    ports:
      - 9000:9000
    environment:
      SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres
      SONARQUBE_JDBC_USERNAME: postgres
      SONARQUBE_JDBC_PASSWORD: example
    networks:
      - lookup
    depends_on:
      - postgres

networks:
  lookup:

volumes:
  postgres:
    driver: local services:
  postgres:
    image: postgres
    restart: always
    environment:
      POSTGRES_PASSWORD: example
    networks:
      - lookup
    ports:
      - 5432:5432
    volumes:
      - postgres:/var/lib/postgresql/data

  sonarqube:
    image: sonarqube:latest
    restart: always
    ports:
      - 9000:9000
    environment:
      SONARQUBE_JDBC_URL: jdbc:postgresql://postgres:5432/postgres
      SONARQUBE_JDBC_USERNAME: postgres
      SONARQUBE_JDBC_PASSWORD: example
    networks:
      - lookup
    depends_on:
      - postgres

networks:
  lookup:

volumes:
  postgres:
    driver: local Inside your project directory, open a terminal, and to start and run the services do docker-compose up . docker-compose up Setup SonarQube Once the services are running on a browser, go to localhost:9000 , and it will open the Sonarqube log-in page. The default username and password is admin . Once you are logged in, it will ask you to set up a new password. localhost:9000 admin After completing these steps, you will be able to see the Sonarqube dashboard. As we are running the Sonarqube locally, we will create a local project. In the below, you will see the marked section that you have to click. It will ask for a project name and a branch name. I will leave the branch name as main . You can choose any branch that you have and create a project. Then we will see a new section where we have to choose Use the global setting for now. main Use the global setting Once we click on create project , it should ask to generate a token. I will only update the Expires in section and make it to No Expiration . Once we generate a token, it will ask us to select our project coding language; after choosing that, we need to download the scanner zip folder. I have marked the section where you will find it below. create project Expires in No Expiration Let’s unzip the folder and open the folder; you will find the bin folder, and inside, you will find a sonar-scanner file. Copy the path of that file, and save it in a text file. bin sonar-scanner ~./sonar-scanner-cli-6.1.0.4477-linux-x64/sonar-scanner-6.1.0.4477-linux-x64/bin ~./sonar-scanner-cli-6.1.0.4477-linux-x64/sonar-scanner-6.1.0.4477-linux-x64/bin After that, you need to copy the command given in the Execute the Scanner section. Execute the Scanner Once you copy that, then concat with the path that you have saved in the file as shown below. ~./sonar-scanner-cli-6.1.0.4477-linux-x64/sonar-scanner-6.1.0.4477-linux-x64/bin/sonar-scanner \
   -Dsonar.projectKey=demo   \
   -Dsonar.sources=.   \
   -Dsonar.host.url=http://localhost:9000   \
   -Dsonar.token=<Your_Token> ~./sonar-scanner-cli-6.1.0.4477-linux-x64/sonar-scanner-6.1.0.4477-linux-x64/bin/sonar-scanner \
   -Dsonar.projectKey=demo   \
   -Dsonar.sources=.   \
   -Dsonar.host.url=http://localhost:9000   \
   -Dsonar.token=<Your_Token> Once you execute the command in the terminal, it will start analyzing your code. Once it finishes the operation, you should see some analytical information in the Sonarqube dashboard. And then, you should be able to see some metrics, and if you have any issues, you should be able to see the reasons for marking it as an issue. Great, we have completed the setup of our Sonarqube on our project locally.

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