Building Docker images in pipeline in Jenkins - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the Docker build step in a Jenkins pipeline.

Jenkins

stage('Build Docker Image') {
  steps {
    script {
      dockerImage = docker.[1]('myapp:latest')
    }
  }
}

Drag options to blanks, or click blank then click option'

Abuild

Bpull

Crun

Dpush

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' instead of 'build' will try to run a container, not build an image.

Using 'push' before building the image will cause an error.

The docker.build command builds a Docker image from the Dockerfile in the workspace.

2fill in blank

medium

Complete the code to push the built Docker image to a registry in the Jenkins pipeline.

Jenkins

stage('Push Docker Image') {
  steps {
    script {
      dockerImage.[1]()
    }
  }
}

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Apull

Bbuild

Cpush

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'build' here will try to build again instead of pushing.

Using 'pull' will try to download an image, not upload.

The push method uploads the Docker image to the specified registry.

3fill in blank

hard

Fix the error in the Jenkins pipeline code to correctly build a Docker image with a custom Dockerfile path.

Jenkins

stage('Build Custom Docker Image') {
  steps {
    script {
      dockerImage = docker.[1]('myapp:custom', '-f Dockerfile.custom .')
    }
  }
}

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Arun

Bbuild

Cpush

Dpull

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' will try to start a container instead of building.

Using 'push' will try to upload an image that may not exist yet.

The build method accepts the image name and build arguments like the Dockerfile path.

4fill in blank

hard

Fill both blanks to build and push a Docker image with a tag in a Jenkins pipeline.

Jenkins

stage('Build and Push') {
  steps {
    script {
      dockerImage = docker.[1]('myapp:[2]')
      dockerImage.push()
    }
  }
}

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Abuild

Blatest

Cdev

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' instead of 'build' will cause an error.

Using 'latest' tag when you want a development version.

Use build to create the image and dev as the tag for development version.

5fill in blank

hard

Fill all three blanks to build a Docker image, tag it, and push it to a registry in a Jenkins pipeline.

Jenkins

stage('Build, Tag, and Push') {
  steps {
    script {
      dockerImage = docker.[1]('myapp:[2]')
      dockerImage.[3]('myregistry.com/myapp:[2]')
    }
  }
}

Drag options to blanks, or click blank then click option'

Abuild

Bpush

Ctag

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of build, tag, and push.

Using 'run' instead of 'tag' or 'push'.

First, build creates the image. Then tag adds a registry tag. Finally, push uploads it.