Docker image analysis tool dive principle analysis

Today I recommend such an open source tool for exploring Docker images, the contents of each layer, and finding ways to reduce the size of Docker/OCI images. That tool is: dive.

Tool address: https://github.com/wagoodman/dive, Star count: 22k+.

This tool can clearly see what is included in each layer of the image, so that you can analyze whether it is necessary, as shown in the figure below.

characteristic

Key features of the tool include:

• Display Docker image contents by layer;
• Point out the changes in each layer;
• Evaluate the "efficiency of the mirror";
• Fast build/analysis cycles;
• Integration with CI;
  
• Supports multiple images and container engines: such as docker, docker-archive and podman;
  

Installation and Usage

1. Mainly use docker to run dive. For specific usage, please refer to the official website:

https://github.com/wagoodman/dive

2. Pull the dive image

docker pull quay.io/wagoodman/dive:latest

3. Run dive through docker to view the image layer information

docker run --rm -it \
-v /var/run/docker.sock:/var/run/docker.sock \
quay.io/wagoodman/dive:latest \
nginx:latest

Note: The last nginx:latest is the image name to be viewed or can be directly replaced with the image ID. The open interface is as follows:

KeyBindings

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.