let's integrate Docker and your Jenkins declarative pipeline

Use your Docker Build and Run Knowledge

docker build - you can use sh 'docker build . -t <tag>' it in your pipeline stage block to run the docker build command. (Make sure you have docker installed with correct permissions.

docker run: you can use sh 'docker run -d <image>' in your pipeline stage block to build the container.

How will the stages look

stages {
        stage('Build') {
            steps {
                sh 'docker build -t trainwithshubham/django-app:latest'
            }
        }
    }

Task-01

• Create a docker-integrated Jenkins declarative pipeline

  Click on new-items > Pipeline project type >Name the pipeline

  

  • 

  • Save and run the pipeline.

  • You should see the pipeline execute each stage and run your application inside a Docker container.

  • 

    

Task-02

• Create a docker-integrated Jenkins declarative pipeline using the docker groovy syntax inside the stage block.

To include docker in the stage block, the docker pipeline and docker plugin need to be installed.

Go to Dashboard > Manage Jenkins > Manage Plugins > Available Plugins > Select the required plugins ‘Docker’ and ‘Docker Pipeline’> Click on Install without restart.

Write the code

The above defines a pipeline with two stages: build and Run. The build stage uses the Docker agent to build a Docker image based on the specified image name. The reuseNode option is set to true, indicate that the same node (Jenkins agent) should be reused for both the build and Run stages. The steps block within the build stage contains a shell command that prints the Python version

We tried running docker-compose in the above code.

save and run the pipeline.

This script defines a pipeline with two stages: Build and Run. The Build stage uses the Docker agent to build a Docker image based on the specified image name. The steps block within the Build stage prints a message indicating that the app is being built using the Docker image.

The Run stage contains two shell steps that execute docker-compose commands. Specifically, it stops and removes any existing containers defined in your docker-compose.yml file using docker-compose down, and then starts the containers again in detached mode using docker-compose up -d.

I hope you like this article.

Happy learning!