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moby--moby/hack/RELEASE-CHECKLIST.md
2014-01-07 18:28:07 -07:00

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Release Checklist

A maintainer's guide to releasing Docker

So you're in charge of a Docker release? Cool. Here's what to do.

If your experience deviates from this document, please document the changes to keep it up-to-date.

1. Pull from master and create a release branch

export VERSION=vX.Y.Z
git checkout release
git fetch
git reset --hard origin/release
git checkout -b bump_$VERSION
git merge origin/master

2. Update CHANGELOG.md

You can run this command for reference:

LAST_VERSION=$(git tag | grep -E 'v[0-9\.]+$' | sort -nr | head -n 1)
git log --stat $LAST_VERSION..HEAD

Each change should be listed under a category heading formatted as #### CATEGORY.

CATEGORY should describe which part of the project is affected. Valid categories are:

  • Builder
  • Documentation
  • Hack
  • Packaging
  • Remote API
  • Runtime
  • Other (please use this category sparingly)

Each change should be formatted as BULLET DESCRIPTION, given:

  • BULLET: either -, + or *, to indicate a bugfix, new feature or upgrade, respectively.

  • DESCRIPTION: a concise description of the change that is relevant to the end-user, using the present tense. Changes should be described in terms of how they affect the user, for example "Add new feature X which allows Y", "Fix bug which caused X", "Increase performance of Y".

EXAMPLES:

## 0.3.6 (1995-12-25)

#### Builder

+ 'docker build -t FOO .' applies the tag FOO to the newly built container

#### Remote API

- Fix a bug in the optional unix socket transport

#### Runtime

* Improve detection of kernel version

3. Change the contents of the VERSION file

echo ${VERSION#v} > VERSION

4. Run all tests

make test

5. Test the docs

Make sure that your tree includes documentation for any modified or new features, syntax or semantic changes. Instructions for building the docs are in docs/README.md.

6. Commit and create a pull request to the "release" branch

git add VERSION CHANGELOG.md
git commit -m "Bump version to $VERSION"
git push origin bump_$VERSION
echo "https://github.com/dotcloud/docker/compare/release...bump_$VERSION"

That last command will give you the proper link to visit to ensure that you open the PR against the "release" branch instead of accidentally against "master" (like so many brave souls before you already have).

7. Get 2 other maintainers to validate the pull request

8. Publish binaries

To run this you will need access to the release credentials. Get them from the infrastructure maintainers.

docker build -t docker .
export AWS_S3_BUCKET="test.docker.io"
export AWS_ACCESS_KEY="$(cat ~/.aws/access_key)"
export AWS_SECRET_KEY="$(cat ~/.aws/secret_key)"
export GPG_PASSPHRASE=supersecretsesame
docker run \
       -e AWS_S3_BUCKET=test.docker.io \
       -e AWS_ACCESS_KEY \
       -e AWS_SECRET_KEY \
       -e GPG_PASSPHRASE \
       -i -t -privileged \
       docker \
       hack/release.sh

It will run the test suite one more time, build the binaries and packages, and upload to the specified bucket (you should use test.docker.io for general testing, and once everything is fine, switch to get.docker.io as noted below).

After the binaries and packages are uploaded to test.docker.io, make sure they get tested in both Ubuntu and Debian for any obvious installation issues or runtime issues.

Announcing on IRC in both #docker and #docker-dev is a great way to get help testing! An easy way to get some useful links for sharing:

echo "Ubuntu/Debian install script: curl -sLS https://test.docker.io/ | sh"
echo "Linux 64bit binary: https://test.docker.io/builds/Linux/x86_64/docker-${VERSION#v}"
echo "Darwin/OSX 64bit client binary: https://test.docker.io/builds/Darwin/x86_64/docker-${VERSION#v}"
echo "Darwin/OSX 32bit client binary: https://test.docker.io/builds/Darwin/i386/docker-${VERSION#v}"
echo "Linux 64bit tgz: https://test.docker.io/builds/Linux/x86_64/docker-${VERSION#v}.tgz"

Once they're tested and reasonably believed to be working, run against get.docker.io:

docker run \
       -e AWS_S3_BUCKET=get.docker.io \
       -e AWS_ACCESS_KEY \
       -e AWS_SECRET_KEY \
       -e GPG_PASSPHRASE \
       -i -t -privileged \
       docker \
       hack/release.sh

9. Apply tag

git tag -a $VERSION -m $VERSION bump_$VERSION
git push origin $VERSION

It's very important that we don't make the tag until after the official release is uploaded to get.docker.io!

10. Go to github to merge the bump_$VERSION into release

Merging the pull request to the release branch will automatically update the documentation on the "latest" revision of the docs. You should see the updated docs 5-10 minutes after the merge. The docs will appear on http://docs.docker.io/. For more information about documentation releases, see docs/README.md.

Don't forget to push that pretty blue button to delete the leftover branch afterwards!

11. Create a new pull request to merge release back into master

git checkout master
git fetch
git reset --hard origin/master
git merge origin/release
git checkout -b merge_release_$VERSION
echo ${VERSION#v}-dev > VERSION
git add VERSION
git commit -m "Change version to $(cat VERSION)"
git push origin merge_release_$VERSION
echo "https://github.com/dotcloud/docker/compare/master...merge_release_$VERSION"

Again, get two maintainers to validate, then merge, then push that pretty blue button to delete your branch.

12. Rejoice and Evangelize!

Congratulations! You're done.

Go forth and announce the glad tidings of the new release in #docker, #docker-dev, on the mailing list, and on Twitter!