Analyzing a Dockerfile for Security Best Practices

30 minutes
  • 3 Learning Objectives

About this Hands-on Lab

Dockerfiles are the source of many container images. Many bad security practices that affect images begin inside a Dockerfile. This lab will give you some hands-on experience with analyzing a Dockerfile and locating settings that could cause unnecessary security risks in the resulting image.

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Check the securi-api Dockerfile

You can find the Dockerfile at /home/cloud_user/securi-api/Dockerfile. This application is a simple Nginx webserver and should not need any additional software.

Edit the file to remove any major security issues or bad security practices.

Check the securi-webserver Dockerfile

You can find the Dockerfile at /home/cloud_user/securi-webserver/Dockerfile.

Edit the file to remove any major security issues or bad security practices.

If you need an OS user, you can use nginxuser.

Check the securi-users Dockerfile

You can find the Dockerfile at /home/cloud_user/securi-users/Dockerfile.

Edit the file to remove any major security issues or bad security practices.

Additional Resources

Your company, SecuriCorp, is using Kubernetes to run a variety of applications. Your developers are developing some container applications, and they have created some Dockerfiles to build container images.

As the local security specialist, you have been asked to look over these Dockerfiles to locate and correct any bad security practices. Each Dockerfile has at least one security issue. Edit the Dockerfiles to correct the issue(s).

What are Hands-on Labs

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

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