DockerSlim

Introduction

The DockerSlim plugin by Devtron helps you to optimize your container deployments by reducing Docker image size. Now with these lighter Docker images, you can perform faster deployments and enhance overall system efficiency.

Support for Docker buildx images will be added soon.

Prerequisites

No prerequisites are required for integrating the DockerSlim plugin.

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Steps

1. Go to Applications → Devtron Apps.

2. Click your application.

3. Go to App Configuration → Workflow Editor.

4. Click New Workflow and navigate to the Build and Deploy from Source Code.

5. Fill the required fields in the Create build pipeline window and navigate to the Post-build stage.

If you have already configured workflow, edit the build pipeline, and navigate to Post-build stage.

6. Under 'TASKS', click the + Add task button.

7. Click the DockerSlim plugin.

8. Enter the following user inputs with appropriate values.

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User Inputs

Task Name

Enter the name of your task

e.g., Reduce Docker image size

Description

Add a brief explanation of the task and the reason for choosing the plugin. Include information for someone else to understand the purpose of the task.

e.g., The DockerSlim plugin is integrated for reducing the size of Docker image.

Input Variables

At IncludePathFile input variable list down the file path of essential files from your Dockerfile. Files for which the path is not listed at IncludePathFile will may be excluded from the Docker image to reduce size.

Variable	Format	Description	Sample Value
HTTPProbe	BOOL	Indicates whether the port is exposed in Dockerfile or not	false
IncludePathFile	STRING	File path of required files	/etc/nginx/include.conf

Trigger/Skip Condition

Here you can set conditions to execute or skip the task. You can select Set trigger conditions for the execution of a task or Set skip conditions to skip the task.

Output Variables

DockerSlim will not be generating an output variable.

Click Update Pipeline.