image-mapper: map images in Dockerfiles #257
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Add a command that maps image references in Dockerfiles to Chainguard. It attempts to be as low touch as possible, leaving the file formatted exactly as it is and just replacing the images where it finds them. As part of this I've refactored the tag matching logic because I wanted to only map to -dev tags, unless the image has no -dev tags at all. This wasn't possible with the abstraction I was previously using.
hooksie1
approved these changes
Jan 6, 2026
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Add a command that maps image references in Dockerfiles to Chainguard.
It attempts to be as low touch as possible, leaving the file formatted exactly as it is and just replacing the images where it finds them.
As part of this I've refactored the tag matching logic because I wanted to only map to -dev tags, unless the image has no -dev tags at all. This wasn't possible with the abstraction I was previously using.