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forgejo/CONTRIBUTING/RELEASE.md
Loïc Dachary 9a66b3d70b
[DOCS] CONTRIBUTING 
Refs: https://codeberg.org/forgejo/forgejo/issues/8
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/153
Refs: https://codeberg.org/forgejo/forgejo/issues/123
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/299
(cherry picked from commit 08dcef0c8c)

[DOCS] CONTRIBUTING/RELEASE: https://forgejo.org/docs/admin

Because the version is not displayed on the landing page of Forgejo,
there cannot be a link to a versionned documentation. There must exist
a link that points to the latest version on the website for the
forgejo instance to display.

Better but more complicated approaches could be to:

* Embed the documentation in Forgejo
* Allow the admin to not display the help
* Allow the admin to display a versionned help or not

(cherry picked from commit 83cc389239)
(cherry picked from commit 5df52b8a4f)
2023-03-12 15:17:09 +01:00

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# Release management
## Release numbering
The Forgejo release numbers are composed of the Gitea release number followed by a dash and a serial number. For instance:
* Gitea **v1.18.0** will be Forgejo **v1.18.0-0**, **v1.18.0-1**, etc
The Gitea release candidates are suffixed with **-rcN** which is handled as a special case for packaging: although **X.Y.Z** is lexicographically lower than **X.Y.Z-rc1** is is considered greater. The Forgejo serial number must therefore be inserted before the **-rcN** suffix to preserve the expected version ordering.
* Gitea **v1.18.0-rc0** will be Forgejo **v1.18.0-0-rc0**, **v1.18.0-1-rc0**
* Gitea **v1.18.0-rc1** will be Forgejo **v1.18.0-2-rc1**, **v1.18.0-3-rc1**, **v1.18.0-4-rc1**
* Gitea **v1.18.0** will be Forgejo **v1.18.0-5**, **v1.18.0-6**, **v1.18.0-7**
* etc.
Because Forgejo is a soft fork of Gitea, it must retain the same release numbering scheme to be compatible with libraries and tools that depend on it. For instance, the tea CLI or the Gitea SDK will behave differently depending on the server version they connect to. If Forgejo had a different numbering scheme, it would no longer be compatible with the Gitea ecosystem.
From a [Semantic Versioning](https://semver.org/) standpoint, all Forgejo releases are [pre-releases](https://semver.org/#spec-item-9) because they are suffixed with a dash. They are syntactically correct but do not comply with the Semantic Versioning recommendations. Gitea is not compliant either and as long as Forgejo is a soft fork, it inherits this problem.
## Release process
When publishing the vX.Y.Z-N release, the following steps must be followed:
### Create a milestone and a check list
* Create a `Forgejo vX.X.Z-N` milestone set to the date of the release
* Create an issue named `[RELEASE] Forgejo vX.Y.Z-N` with a description that includes a list of what needs to be done for the release with links to follow the progress
* Set the milestone of this issue to `Forgejo vX.X.Z-N`
* Close the milestone when the release is complete
### Cherry pick the latest commits from Gitea
The vX.Y/forgejo branch is populated as part of the [rebase on top of Gitea](WORKFLOW.md). The release happens in between rebase and it is worth checking if the matching Gitea branch, release/vX.Y contains commits that should be included in the release.
* `cherry-pick -x` the commits
* push the vX.Y/forgejo branch including the commits
* verify that the tests pass
### Release Notes
* Add an entry in RELEASE-NOTES.md
* Copy/paste the matching entry from CHANGELOG.md
* Update the PR references prefixing them with https://github.com/go-gitea/gitea/pull/
### Testing
When Forgejo is released, artefacts (packages, binaries, etc.) are first published by the CI/CD pipelines in the https://codeberg.org/forgejo-experimental organization, to be downloaded and verified to work.
* Push the vX.Y/forgejo branch to https://codeberg.org/forgejo-integration/forgejo
* Push the vX.Y.Z-N tag to https://codeberg.org/forgejo-integration (if it fails for whatever reason, the tag and the release can be removed manually)
* Binaries are built and uploaded to https://codeberg.org/forgejo/forgejo-integration/releases
* Container images are built and uploaded to https://codeberg.org/forgejo-integration/-/packages/container/forgejo/versions
* Push the vX.Y/forgejo branch to https://codeberg.org/forgejo-experimental/forgejo
* Push the vX.Y/forgejo branch to https://codeberg.org/forgejo/experimental
* Push the vX.Y.Z-N tag to https://codeberg.org/forgejo/experimental
* Binaries are downloaded from https://codeberg.org/forgejo-integration, signed and copied to https://codeberg.org/forgejo-experimental
* Container images are copied from https://codeberg.org/forgejo-integration to https://codeberg.org/forgejo-experimental
* Fetch the Forgejo release as part of the [forgejo-ci](https://codeberg.org/Codeberg-Infrastructure/scripted-configuration/src/branch/main/hosts/forgejo-ci) test suite. Push the change to a branch of a repository enabled in https://ci.dachary.org/ ([read more...](https://codeberg.org/forgejo/forgejo/issues/208)). It will deploy the release and run high level integration tests.
* Reach out to packagers and users to manually verify the release works as expected
### Publication
* Push the vX.Y.Z-N tag to https://codeberg.org/forgejo/release
* Binaries are downloaded from https://codeberg.org/forgejo-integration, signed and copied to https://codeberg.org/forgejo
* Container images are copied from https://codeberg.org/forgejo-integration to https://codeberg.org/forgejo
### Website update
* Restart the last CI build at https://codeberg.org/forgejo/website/src/branch/main/
* Verify https://forgejo.org/download/ points to the expected release
* Update the [documentation link to the latest version](https://codeberg.org/forgejo/website/src/commit/e63c6f8ab64876b10b86de1d18162b6ccb87bd99/.woodpecker.yml#L35)
* Manually try the instructions to work
### DNS update
* Update the `release.forgejo.org` TXT record that starts with `forgejo_versions=` to be `forgejo_versions=vX.Y.Z-N`
### Standard toot
The following toot can be re-used to announce a minor release at `https://floss.social/@forgejo`. For more significant releases it is best to consider a dedicated and non-standard toot.
```
#Forgejo vX.Y.Z-N was just released! This is a minor patch. Check out the release notes and download it at https://forgejo.org/releases/. If you experience any issues with this release, please report to https://codeberg.org/forgejo/forgejo/issues.
```
## Release signing keys management
A GPG master key with no expiration date is created and shared with members of the Owners team via encrypted email. A subkey with a one year expiration date is created and stored in the secrets repository, to be used by the CI pipeline. The public master key is stored in the secrets repository and published where relevant.
### Master key creation
* gpg --expert --full-generate-key
* key type: ECC and ECC option with Curve 25519 as curve
* no expiration
* id: Forgejo Releases <contact@forgejo.org>
* gpg --export-secret-keys --armor EB114F5E6C0DC2BCDD183550A4B61A2DC5923710 and send via encrypted email to Owners
* gpg --export --armor EB114F5E6C0DC2BCDD183550A4B61A2DC5923710 > release-team-gpg.pub
* commit to the secret repository
### Subkey creation and renewal
* gpg --expert --edit-key EB114F5E6C0DC2BCDD183550A4B61A2DC5923710
* addkey
* key type: ECC (signature only)
* key validity: one year
* create [an issue](https://codeberg.org/forgejo/forgejo/issues) to schedule the renewal
#### 2023
* gpg --export --armor F7CBF02094E7665E17ED6C44E381BF3E50D53707 > 2023-release-team-gpg.pub
* gpg --export-secret-keys --armor F7CBF02094E7665E17ED6C44E381BF3E50D53707 > 2023-release-team-gpg
* commit to the secrets repository
* renewal issue https://codeberg.org/forgejo/forgejo/issues/58
### CI configuration
In the Woodpecker CI configuration the following secrets must be set:
* `releaseteamgpg` is the secret GPG key used to sign the releases
* `releaseteamuser` is the user name to authenticate with the Forgejo API and publish the releases
* `releaseteamtoken` is the token to authenticate `releaseteamuser` with the Forgejo API and publish the releases
* `domain` is `codeberg.org`
## Users, organizations and repositories
### Shared user: release-team
The [release-team](https://codeberg.org/release-team) user publishes and signs all releases. The associated email is mailto:release@forgejo.org.
The public GPG key used to sign the releases is [EB114F5E6C0DC2BCDD183550A4B61A2DC5923710](https://codeberg.org/release-team.gpg) `Forgejo Releases <release@forgejo.org>`
### Shared user: forgejo-ci
The [forgejo-ci](https://codeberg.org/forgejo-ci) user is dedicated to https://forgejo-ci.codeberg.org/ and provides it with OAuth2 credentials it uses to run.
### Shared user: forgejo-experimental-ci
The [forgejo-experimental-ci](https://codeberg.org/forgejo-experimental-ci) user is dedicated to provide the application tokens used by Woodpecker CI repositories to build releases and publish them to https://codeberg.org/forgejo-experimental. It does not (and must not) have permission to publish releases at https://codeberg.org/forgejo.
### Integration and experimental organization
The https://codeberg.org/forgejo-integration organization is dedicated to integration testing. Its purpose is to ensure all artefacts can effectively be published and retrieved by the CI/CD pipelines.
The https://codeberg.org/forgejo-experimental organization is dedicated to publishing experimental Forgejo releases. They are copied from the https://codeberg.org/forgejo-integration organization.
The `forgejo-experimental-ci` user as well as all Forgejo contributors working on the CI/CD pipeline should be owners of both organizations.
The https://codeberg.org/forgejo-integration/forgejo repository is coupled with a Woodpecker CI repository configured with the credentials provided by the https://codeberg.org/forgejo-experimental-ci user. It runs the pipelines found in `releases/woodpecker-build/*.yml` which builds and publishes an unsigned release in https://codeberg.org/forgejo-integration.
### Experimental and release repositories
The https://codeberg.org/forgejo/experimental private repository is coupled with a Woodpecker CI repository configured with the credentials provided by the https://codeberg.org/forgejo-experimental-ci user. It runs the pipelines found in `releases/woodpecker-publish/*.yml` which signs and copies a release from https://codeberg.org/forgejo-integration into https://codeberg.org/forgejo-experimental.
The https://codeberg.org/forgejo/release private repository is coupled with a Woodpecker CI repository configured with the credentials provided by the https://codeberg.org/release-team user. It runs the pipelines found in `releases/woodpecker-publish/*.yml` which signs and copies a release from https://codeberg.org/forgejo-integration into https://codeberg.org/forgejo.
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