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external-snapshotter/vendor/github.com/kubernetes-csi/csi-lib-utils/release-tools/README.md
2019-02-13 22:37:46 -05:00

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# [csi-release-tools](https://github.com/kubernetes-csi/csi-release-tools)
These build and test rules can be shared between different Go projects
without modifications. Customization for the different projects happen
in the top-level Makefile.
The rules include support for building and pushing Docker images, with
the following features:
- one or more command and image per project
- push canary and/or tagged release images
- automatically derive the image tag(s) from repo tags
- the source code revision is stored in a "revision" image label
- never overwrites an existing release image
Usage
-----
The expected repository layout is:
- `cmd/*/*.go` - source code for each command
- `cmd/*/Dockerfile` - docker file for each command or
Dockerfile in the root when only building a single command
- `Makefile` - includes `release-tools/build.make` and sets
configuration variables
- `.travis.yml` - a symlink to `release-tools/.travis.yml`
To create a release, tag a certain revision with a name that
starts with `v`, for example `v1.0.0`, then `make push`
while that commit is checked out.
It does not matter on which branch that revision exists, i.e. it is
possible to create releases directly from master. A release branch can
still be created for maintenance releases later if needed.
Release branches are expected to be named `release-x.y` for releases
`x.y.z`. Building from such a branch creates `x.y-canary`
images. Building from master creates the main `canary` image.
Sharing and updating
--------------------
[`git subtree`](https://github.com/git/git/blob/master/contrib/subtree/git-subtree.txt)
is the recommended way of maintaining a copy of the rules inside the
`release-tools` directory of a project. This way, it is possible to make
changes also locally, test them and then push them back to the shared
repository at a later time.
Cheat sheet:
- `git subtree add --prefix=release-tools https://github.com/kubernetes-csi/csi-release-tools.git master` - add release tools to a repo which does not have them yet (only once)
- `git subtree pull --prefix=release-tools https://github.com/kubernetes-csi/csi-release-tools.git master` - update local copy to latest upstream (whenever upstream changes)
- edit, `git commit`, `git subtree push --prefix=release-tools git@github.com:<user>/csi-release-tools.git <my-new-or-existing-branch>` - push to a new branch before submitting a PR