Whaler VS mtsc

Whaler may help you: https://github.com/P3GLEG/Whaler

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.

3) Specific tooling. Tools like whaler will automate the process of pulling the Dockerfile contents out of an image file.

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.

Obligatory self promotion: https://github.com/nanoscopic/mtsc

It is a tool I created myself for figuring out the contents of layered docker images.

It does these things:

1. Compares two docker images to see exact file differences

2. Diffs the contents of two directory structures

3. Views contents of a docker image without mounting it or using docker itself

4. Generates a standalone index of the contents of a docker image

5. Determines the resultant layer composition of a directory within a docker image

6. Extracts a specific pathed file from a layered docker image

It is extremely helpful when trying to determine the exact differences between two different builds of the same Dockerfile.