Dockerfile review

- [Instructor] To create a custom action, … we'll need to start with a Dockerfile. … If you're already familiar with using Docker … in writing Dockerfiles, … you can skip this lesson and move on to the next lesson … where we discuss adding a Dockerfile to our repo. … But if you need some direction or refresher on Dockerfiles, … stick around, I promise it will be fun. … Before getting started with Docker, … you'll need to have it installed on your local system. … You'll find links to installers for MAC OS and Windows … on the Docker home page. … If you need more details on installing Docker, … you'll find several videos in the LinkedIn Learning Library … by searching for the keywords Install Docker. … Dockerfiles contain all the information needed … to build a Docker image. … This could include references to other images … and specific commands to run during the build process. … By documenting each step required to build an image, … we can be sure that the image will be the same … each time it gets built. …