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Kaniko Release Process

This document explains the Kaniko release process.

Kaniko is not an officially supported Google product. Kaniko is maintained by Google.

Self-Serve Kaniko Release [Non-Google contributors]

Kaniko is not an officially supported Google product however only contributors part of Google organization can release Kaniko to official kaniko project at kaniko-project. If you are a part of Google organization, please see skip to Kaniko Release Process - Google Contributors

Non-Google Contributors or users, please follow the following steps:

Follow the setup instruction to fork kaniko repository here
Run the following make commands to build and push Kaniko image to your organization image repository.

 REGISTRY=gcr.io/YOUR-PROJECT make images

The above command will build and push all the 3 kaniko images

gcr.io/YOUR-PROJECT/executor:latest
gcr.io/YOUR-PROJECT/executor:debug
gcr.io/YOUR-PROJECT/warmer:latest

You can choose tag these images using docker tag e.g. To tag gcr.io/YOUR-PROJECT/executor:latest as gcr.io/YOUR-PROJECT/executor:v1.6.0self-serve, run
```
 docker tag gcr.io/YOUR-PROJECT/executor:latest gcr.io/YOUR-PROJECT/executor:v1.6.0self-serve
```

Please change all usages of gcr.io/kaniko-project/executor:latest to gcr.io/YOUR-PROJECT/executor:latest for executor image and so on. 4. Finally, pushed your tagged images via docker. You could also use the Makefile target push to push these images like this

 REGISTRY=gcr.io/YOUR-PROJECT make images

Kaniko Release Process [Google Contributors]

Getting write access to the Kaniko Project

In order to kick off kaniko release, you need to write access to Kaniko project.

To get write access, please ping one of the Kaniko Maintainers.

Once you have the correct access, you can kick off a release.

Kicking of a release.

Create a release PR and update Changelog.

In order to release a new version of Kaniko, you will need to first

a. Create a new branch and bump the kaniko version in Makefile

In most cases, you will need to bump the VERSION_MINOR number. In case you are doing a patch release for a hot fix, bump the VERSION_BUILD number.

b. Run the script to create release notes.
```
./hack/release.sh
Collecting pull request that were merged since the last release: v1.0.0 (2020-08-18 02:53:46 +0000 UTC)
* change repo string to just string [#1417](https://github.com/GoogleContainerTools/kaniko/pull/1417)
* Improve --use-new-run help text, update README with missing flags [#1405](https://github.com/GoogleContainerTools/kaniko/pull/1405)
...
Huge thank you for this release towards our contributors: 
- Alex Szakaly
- Alexander Sharov
```
Copy the release notes and update the CHANGELOG.md at the root of the repository.

c. Create a pull request like this and get it approved from Kaniko maintainers.

Once the PR is approved and merged, create a release tag with name vX.Y.Z where

X corresponds to VERSION_MAJOR
Y corresponds to VERSION_MINOR
Z corresponds to VERSION_BUILD

E.g. to release 1.2.0 version of kaniko, please create a tag v1.2.0 like this

git pull remote master
git tag v1.2.0
git push remote v1.2.0

Pushing a tag to remote with above naming convention will trigger the Github workflow action defined here It takes 20-30 mins for the job to finish and push images to kaniko-project

gcr.io/kaniko-project/executor:latest
gcr.io/kaniko-project/executor:vX.Y.Z
gcr.io/kaniko-project/executor:debug
gcr.io/kaniko-project/executor:debug-vX.Y.Z
gcr.io/kaniko-project/executor:warmer
gcr.io/kaniko-project/executor:warmer-vX.Y.Z

You could verify if the images are published using the docker pull command

docker pull gcr.io/kaniko-project/executor:vX.Y.Z
docker pull gcr.io/kaniko-project/warmer:vX.Y.Z

In case the images are still not published, ping one of the kaniko maintainers and they will provide the cloud build trigger logs. You can also request read access to the Google kaniko-project.

Finally, once the images are published, create a release for the newly created tag and publish it. Summarize the change log to mention,

new features added if any
bug fixes,
refactors and
documentation changes