Question 85279 in Docker Question posted in
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How to generate a Dockerfile from an image

One of our X employee has created an docker image. Currently i need to update the same image which was created by him. But unfortunately i couldn’t find the Dockerfile for the image.

Is it possible to generate a dockerfile from an image?

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2

Answers


  1. 0

    this answer is good from here

    This worked for me from the answers

    docker pull chenzj/dfimage

alias dfimage="docker run -v /var/run/docker.sock:/var/run/docker.sock --rm chenzj/dfimage"

dfimage image_id

    you need the image id – not the name

    e.g

    $docker images

REPOSITORY   TAG  IMAGE ID  CREATED  SIZE

    so the third column.

    There is still work to do with it and it all depends how the docker image was created

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  2. 0

    You can try running this command:

    alias dfimage="docker run -v /var/run/docker.sock:/var/run/docker.sock --rm alpine/dfimage"
dfimage -sV=1.36 IMAGE_NAME:IMAGE_TAG

    And note at Dockerfile

    enter image description here

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