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moby--moby/hack/RELEASE.md

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## 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
```bash
$ git checkout master
$ git pull
$ git checkout -b bump_$VERSION
```
### 2. Update CHANGELOG.md
You can run this command for reference:
```bash
LAST_VERSION=$(git tag | grep -E "v[0-9\.]+$" | sort -nr | head -n 1)
git log $LAST_VERSION..HEAD
```
Each change should be formatted as ```BULLET CATEGORY: DESCRIPTION```
* BULLET is either ```-```, ```+``` or ```*```, to indicate a bugfix,
new feature or upgrade, respectively.
* CATEGORY should describe which part of the project is affected.
Valid categories are:
* Runtime
* Remote API
* Builder
* Documentation
* Hack
* 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 "new feature
X which allows Y", "fixed bug which caused X", "increased performance of Y".
EXAMPLES:
```
+ Builder: 'docker build -t FOO' applies the tag FOO to the newly built container.
* Runtime: improve detection of kernel version
- Remote API: fix a bug in the optional unix socket transport
```
### 3. Change VERSION in commands.go
### 4. Run all tests
### 5. Commit and create a pull request
```bash
$ git add commands.go CHANGELOG.md
$ git commit -m "Bump version to $VERSION"
$ git push origin bump_$VERSION
```
### 6. Get 2 other maintainers to validate the pull request
### 7. Merge the pull request and apply tags
```bash
$ git checkout master
$ git merge bump_$VERSION
$ git tag -a v$VERSION # Don't forget the v!
$ git tag -f -a latest
$ git push
$ git push --tags
```
### 8. Publish binaries
To run this you will need access to the release credentials.
Get them from [the infrastructure maintainers](https://github.com/dotcloud/docker/blob/master/hack/infrastructure/MAINTAINERS).
```bash
$ RELEASE_IMAGE=image_provided_by_infrastructure_maintainers
$ BUILD=$(docker run -d -e RELEASE_PPA=0 $RELEASE_IMAGE)
```
This will do 2 things:
* It will build and upload the binaries on http://get.docker.io
* It will *test* the release on our Ubuntu PPA (a PPA is a community repository for ubuntu packages)
Wait for the build to complete.
```bash
$ docker wait $BUILD # This should print 0. If it doesn't, your build failed.
```
Check that the output looks OK. Here's an example of a correct output:
```bash
$ docker logs 2>&1 b4e7c8299d73 | grep -e 'Public URL' -e 'Successfully uploaded'
Public URL of the object is: http://get.docker.io.s3.amazonaws.com/builds/Linux/x86_64/docker-v0.4.7.tgz
Public URL of the object is: http://get.docker.io.s3.amazonaws.com/builds/Linux/x86_64/docker-latest.tgz
Successfully uploaded packages.
```
If you don't see 3 lines similar to this, something might be wrong. Check the full logs and try again.
### 9. Publish Ubuntu packages
If everything went well in the previous step, you can finalize the release by submitting the Ubuntu packages.
```bash
$ RELEASE_IMAGE=image_provided_by_infrastructure_maintainers
$ docker run -e RELEASE_PPA=1 $RELEASE_IMAGE
```
If that goes well, congratulations! You're done.