dive
A tool for exploring each layer in a docker image (by wagoodman)
Whaler
Program to reverse Docker images into Dockerfiles (by P3GLEG)
| dive | Whaler | |
|---|---|---|
| 94 | 4 | |
| 49,949 | 1,109 | |
| 1.5% | 2.9% | |
| 3.4 | 4.0 | |
| 7 days ago | 10 days ago | |
| Go | Go | |
| MIT License | GNU General Public License v3.0 only |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
dive
Posts with mentions or reviews of dive.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-03-17.
-
Dockerfile Best Practices: The Ultimate Guide to Optimizing Your Container Builds
[Source: Dive on GitHub]
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Docker Image Optimization: A Comprehensive Guide to Creating Smaller and More Efficient Containers
Learn more on the Dive GitHub page.
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Buildah, Dive, Skopeo: 3 Container Tools for building images on Kubernetes Cluster, with Gitlab CI
curl -L https://github.com/wagoodman/dive/releases/download/v0.9.2/dive_0.9.2_linux_amd64.tar.gz -o dive.tar.gz tar -xvf dive.tar.gz
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Show HN: Docker-phobia: Analyze Docker image size with a treemap
Cool, gonna try this soon. Would be great to use in combination with Dive (https://github.com/wagoodman/dive)
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Mastering Docker Image Optimization: 6 Key Strategies for building Lighter, Faster, and Safer images
Dive is an open-source tool that allows you to explore the various layers of a Docker image. It shows you the content of each layer and helps you identify voluminous or unnecessary parts.
- Optimisation des images Docker: 6 Stratégies clés pour des images plus légeres et plus performantes
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I reduced the size of my Docker image by 40% – Dockerizing shell scripts
Dive is a great tool for debugging this. I like image reduction work just because it gives me a chance to play with Dive: https://github.com/wagoodman/dive
One easy low hanging fruit I see a LOT for ballooning image sizes is people including the kitchen sink SDK/CLI for their cloud provider (like AWS or GCP), when they really only need 1/100 of that. The full versions of both of these tools are several hundred mb each
- Dive: A tool for exploring a Docker image, layer contents and more
- Dive – A tool for exploring each layer in a Docker image
- FLaNK Stack Weekly for 12 September 2023
Whaler
Posts with mentions or reviews of Whaler.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-07-04.
-
Any Way To See The Dockerfile Used To Make An Image On Dockerhub?
Whaler may help you: https://github.com/P3GLEG/Whaler
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Reverse Image
https://github.com/P3GLEG/Whaler <-- that should do what you're looking for. It depends on the image having been generated using a standard Dockerfile approach, but that should work for most images.
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Scanning Millions Of Publicly Exposed Docker Containers - Thousands Of Secrets Leaked
3) Specific tooling. Tools like whaler will automate the process of pulling the Dockerfile contents out of an image file.
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Reverse Engineering a Docker Image
In addition to Dive, there's also Whaler https://github.com/P3GLEG/Whaler which will print out a Dockerfile from the image, based on the metadata in the image.
You can also use Portainer https://www.portainer.io/ which will show the image layer details in the images section.
What are some alternatives?
When comparing dive and Whaler you can also consider the following projects:
lnav - Log file navigator
Portainer - Making Docker and Kubernetes management easy.
skopeo - Work with remote images registries - retrieving information, images, signing content
lazydocker - The lazier way to manage everything docker
buildkit - concurrent, cache-efficient, and Dockerfile-agnostic builder toolkit
weakpass - Weakpass collection of tools for bruteforce and hashcracking