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Releasing shields.io

This describes how to release Dagger:

This is a high-level diagram of how all the pieces fit together:

flowchart TB
    repo(["🐙 github.com/dagger/dagger"])
    docs["📒 Documentation"]
    ci["⚙️ CI"]
    repo -.-> docs & ci

    subgraph Dagger
        engine("🚙 Engine")
        cli("🚗 CLI  ")
    end

    repo ==> engine & cli

    S3["🗄 dl.dagger.io/dagger"]
    brew-tap["🐙 github.com/dagger/homebrew-tap"]
    github-action["🐙 github.com/dagger/dagger-for-github"]
    nix["❄️ github.com/dagger/nix"]
    cli --> S3 ------> brew-tap & github-action & nix

    registry["📦 registry.dagger.io/engine"]
    ghcr["🐙 ghcr.io/dagger/engine"]
    engine --> ghcr --> registry

    go["🐹 Go SDK"]
    go-repo["🐙 github.com/dagger/dagger-go-sdk"]
    go-pkg["🐹 dagger.io/dagger"]
    go-ref["🐹 pkg.go.dev/dagger.io/dagger"]
    playground["🛝 Playground"]
    daggerverse["🌌 Daggerverse"]
    cloud["☁️ Dagger Cloud"]

    repo ==> go --> go-repo --> go-pkg & go-ref
    go-pkg -.-> daggerverse & cloud
    registry -.- S3 -.- go & python & typescript & elixir & php & helm

    registry -.....- playground

    python["🐍 Python SDK"]
    pypi["🐍 pypi.org/project/dagger-io"]
    readthedocs["📖 dagger-io.readthedocs.io"]
    repo ==> python --> pypi & readthedocs

    typescript["⬢ TypeScript SDK"]
    npm["⬢ npmjs.com/@dagger.io/dagger"]
    repo ==> typescript --> npm

    elixir["🧪 Elixir SDK"]
    hex["🧪 hex.pm/packages/dagger"]
    repo ==> elixir --> hex

    php["🐘 PHP SDK"]
    php-repo["🐙 github.com/dagger/dagger-php-sdk"]
    php-pkg["🐘 packagist.org/packages/dagger/dagger"]
    repo ======> php --> php-repo --> php-pkg

    helm["☸️ Helm chart"]
    repo ======> helm
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Let the team know

Before you go ahead and produce a new release, remember that it's a team effort. The first step is to let the team know what is going to happen, preferably a few days in advance so that they can react. We do our release threads in public wherever possible, to give the community more visibility, and to help external contributors to more easily keep in sync with the release cadence.

To let the team know:

This allows others to weigh in whether:

  • we should go for a patch / minor bump
  • there are any PRs that people are waiting to get merged
  • any big features which need to remain experimental?
  • etc.

Maybe there are breaking changes which we should be aware of and message accordingly. Giving other team members a day or two to react - because timezones! - will make this entire process smoother.

Most importantly, patch vs minor is not a technical decision. If you want to read more about this, see this (private) Discord thread.

  • If doing a minor release, determine if there are any deprecations that can be removed.

Note

Once you know what type of release we are producing - patch vs minor - remember to edit the ? in the Discord thread.

Backwards compatibility

Where possible, we try to ensure backwards compatibility between mismatched cli and engine versions. However, for technical reasons, this isn't always possible: sometime the communication protocol changes, or a bug fix or new feature requires changes on both the CLI and the engine.

Before releasing, make sure to sanity check the backwards compatibility of a release. If you enounter issues, then:

  • Add a release note using changie new (or add it later manually).
  • Bump the minimum version numbers in engine/version.go.

If unsure, bump both the client and engine minimum version numbers, but if the backwards compatibility is only an issue in one direction, you only need to bump that one.

Improve this doc while releasing 改善

In order to keep this relevant & accurate, we improve this doc during the release process. It's the best time to pause, observe how it all fits together, and improve it. We want small, constant improvements which compound. Therefore:

  • Save a copy of this doc outside of this repository (e.g. ~/Downloads/RELEASING.md). Now open that copy in your editor and start ticking items off it as you make progress. Remember to add / remove / edit any parts which could be improved. As inspiration, see what a past PR with improvements looks like.
  • Update the date in the shields.io badge, first line in this file.

Note

We believe in documentation first, automation second. Documenting a process forces us to understand it well. Continuously editing this documentation refines our understanding. Once we have a good grasp of the problem space, and reach an elegant solution, it comes natural to automate & speed things up, to make the process more efficient. We should still be able to perform things manually if we need to - because sometimes automation fails 🤷. This is when everyone wishes they had good documentation, the original author(s) or both! It's also worth mentioning that when it's time to improve this automation, we want to be looking at the blueprint - this doc right here - not the implementation. If you ever had to migrate from Chef/Puppet to Ansible/Terraform, you know what it was like to migrate the implementation.

Workflow for releases off non-main branch

Currently, some of the steps here vary depending on whether we are running a release off of main vs. off of a separate branch.

They are marked with 🚨 in the steps below.

We do this process when we need to do a patch release but don't want to include every commit that has been merged to main since the last release.

In the long term we should strive to make the process the same regardless of the branch we are releasing off of, but for now, we need to be aware of the differences.

Required tooling

Before starting the releasing process, make sure you have your local environment setup and ready to go. You'll need (at least) the following tools - though you probably already have most of them if you're regularly contributing to dagger.

🚙 Engine + 🚗 CLI ⏱ 30mins

Warning

It is important to always do an Engine + CLI release prior to releasing any SDK. This will ensure that all the APIs in the SDK are also available in the Engine it depends on.

Setup some variables used throughout the release process:

# 🚨 change this from `main` to `release-vX.Y.Z` if releasing off a non-main branch
export RELEASE_BRANCH=main

# If not named "origin" in your local checkout, replace "origin" with whatever the
# github.com/dagger/dagger repo is named for you locally
export DAGGER_REPO_REMOTE=origin

Note

This process involves direct pushes to the github.com/dagger/dagger repository. Recently there have been permission issues here that result in errors like

refusing to allow an OAuth App to create or update workflow when pushing.

If you encounter this, you may need to change your git remote from https to ssh, e.g.

git remote set-url $DAGGER_REPO_REMOTE [email protected]:dagger/dagger.git

It's advisable to go back to https after the release is complete to not retain excessive permissions longer than necessary, e.g. to go back run

git remote set-url $DAGGER_REPO_REMOTE https://github.com/dagger/dagger.git

🚨 Non-main branch release only:

Create a new branch off of the previous git tag being patched named release-vX.Y.Z (e.g. release-v0.11.9)

git switch -c $RELEASE_BRANCH

# e.g. if creating a new v0.11.9 release off of v0.11.8, use v0.11.8 here
git reset --hard <previous tag being patched>

git push --set-upstream $DAGGER_REPO_REMOTE "$RELEASE_BRANCH"

Setup the local branch to align with the remote branch being released

git checkout "$RELEASE_BRANCH"

git pull $DAGGER_REPO_REMOTE "$RELEASE_BRANCH"
🚨 Non-main branch release only:

git cherry-pick <commit-hash> the commits you want to include in the release from main to the release branch.

You will also want to ensure you always cherry-pick a few special commits:

  • The SDK bump PR for the release being patched.
    • e.g. if we are creating a v0.11.9 release based off of v0.11.8, you want to ensure you cherry-pick this PR.
  • The PR that bumps CI to use the new Engine version.
    • e.g. if we are creating a v0.11.9 release based off of v0.11.8, you want to ensure you cherry-pick this PR that upgrades CI to use v0.11.8 engines.
  • Determine the next release version (use patch/minor/major to set the release type):
export ENGINE_VERSION_TYPE=patch
export ENGINE_VERSION="$(changie next $ENGINE_VERSION_TYPE)"

# this is required to interpolate $ENGINE_VERSION to the SDK release notes
export CHANGIE_ENGINE_VERSION="$ENGINE_VERSION"
  • Create the target release notes branch for a PR - e.g. prep-v0.12.4.
    • 🚨 Non-main branch release only: This PR will also include the cherry-picked commits mentioned above.
git checkout -b prep-$ENGINE_VERSION
  • Bump SDK versions to the target version
dagger call sdk all bump --version="$ENGINE_VERSION" -o ./
git add sdk
git commit -s -m "chore: bump sdk dependencies to $ENGINE_VERSION"
  • Bump Helm version to the target version
dagger call helm set-version --version="$ENGINE_VERSION" -o ./helm/dagger/Chart.yaml
git add helm
git commit -s -m "chore: bump helm dependency to $ENGINE_VERSION"
  • Push and open the PR as a draft, and capture the PR number:
export RELEASE_PREP_PR=<PR>
  • Generate bump changes for each SDK + the helm charts
export GITHUB_USERNAME="YOUR USERNAME HERE" # replace with your username
find sdk/go sdk/python sdk/typescript sdk/elixir sdk/php helm/dagger -maxdepth 1 -name .changie.yaml -execdir \
      changie new --kind "Dependencies" --body "Bump Engine to $ENGINE_VERSION" --custom PR="$RELEASE_PREP_PR" --custom Author="$GITHUB_USERNAME" \;
  • Generate release notes .changes/**/v0.12.4.md for all releases by running changie batch $ENGINE_VERSION:
find . sdk/go sdk/python sdk/typescript sdk/elixir sdk/php helm/dagger -maxdepth 1 -name .changie.yaml -execdir changie batch $ENGINE_VERSION \;
  • Make any necessary edits to the newly generated file, e.g. .changes/v0.12.4.md
  • Update CHANGELOG.md by running changie merge.
find . sdk/go sdk/python sdk/typescript sdk/elixir sdk/php helm/dagger -maxdepth 1 -name .changie.yaml -execdir changie merge \;
git add **/.changes
git add **/CHANGELOG.md
git commit -s -m "chore: add release notes for $ENGINE_VERSION"

  • Update .changes/.next with the next release number if known - otherwise, make the file empty (but don't remove it).

  • Update all dagger versions in docs/current_docs/partials/_install-cli.mdx to $ENGINE_VERSION

    • e.g. if bumping 0.12.5->0.12.6, can run sed -i 's/0\.12\.5/0\.12\.6/g' docs/current_docs/partials/_install-cli.mdx

  • 30 mins Submit, review and merge the prep PR. The merge commit is what gets tagged in the next step.

    • 🚨 Non-main branch release only: Ideally use "Rebase and Merge" rather than squashing commits when merging so we can more easily preserve the history of the cherry-picked commits.

  • Ensure that all checks are green ✅ on the $RELEASE_BRANCH that you are about to release.

    • 🚨 Non-main branch release only: currently, CI does not run on non-main branches and some of the workflows are currently hardcoded with main so it's not safe to manually run them. So for now this has to be skipped in this case.

  • 30mins When you have confirmed that all checks are green, run the following:

git checkout "$RELEASE_BRANCH"
git pull "$DAGGER_REPO_REMOTE" "$RELEASE_BRANCH"

export ENGINE_GIT_SHA="$(git rev-parse --verify HEAD)"
git tag "$ENGINE_VERSION" "$ENGINE_GIT_SHA"
git push "$DAGGER_REPO_REMOTE" "$ENGINE_VERSION"

This will kick off .github./workflows/publish.yml which publishes:

Improve releasing 改善

  • Download and install the latest release, and continue the rest of the release process using the just-released CLI. This is needed now so the dev module updated below will get dagger.json's engine version bumped.
# install the cli to dagger-0.13.0, and symlink dagger to it
curl -fsSL https://dl.dagger.io/dagger/install.sh | BIN_DIR=$HOME/.local/bin DAGGER_VERSION=0.13.0 sh
mv ~/.local/bin/dagger{,-0.13.0}
ln -s ~/.local/bin/dagger{-0.13.0,}

dagger version
dagger core version

  • Update all dagger versions in .github/ to $ENGINE_VERSION

    • The version numbers (of the form <major>.<minor>.<patch>) should be updated to the new version
    • The worker runner versions (of the form dagger-v<major>-<minor>-<patch>-<worker>)
    • e.g. if bumping 0.12.6->0.12.7, can run find .github/ -type f -exec sed -i 's/0-12-6/0-12-7/g; s/0\.12\.6/0\.12\.7/g' {} +

  • Regenerate .github/ configs by running dagger call -m .github generate -o .

  • Open a PR with the title Improve Releasing during $ENGINE_VERSION

git checkout -b improve-releasing-during-$ENGINE_VERSION
git add .  # or any other files changed during the last few steps
git commit -s -m "Improve releasing during $ENGINE_VERSION"
git push
  • Swap back to $RELEASE_BRANCH to continue
git checkout "$RELEASE_BRANCH"
🚨 Non-main branch release only:

Change the branch the PR is being merged into from main to the release-vX.Y.Z branch.

🐹 Go SDK ⏱ 10mins

  • Ensure that all checks are green ✅ on the $RELEASE_BRANCH branch that you are about to release. This will usually be the commit that bumps the Engine version, the one that you merged earlier.
    • 🚨 Non-main branch release only: currently, CI does not run on non-main branches and some of the workflows are currently hardcoded with main so it's not safe to manually run them. So for now this has to be skipped in this case.
export SDK_GIT_SHA=$ENGINE_GIT_SHA
  • Tag & publish:
cd sdk/go && export GO_SDK_VERSION=$(changie latest) && cd ../..
git tag "sdk/go/$GO_SDK_VERSION" "$SDK_GIT_SHA"
git push "$DAGGER_REPO_REMOTE" "sdk/go/$GO_SDK_VERSION"

This will trigger the publish-sdk-go workflow which publishes to 🐙 github.com/dagger/dagger-go-sdk.

The release notes should be automatically uploaded as a draft to the Dagger releases page. Navigate to the draft release, then:

  • Check that release notes look good in Preview
  • ⚠️ De-select Set as the latest release (only used for 🚙 Engine + 🚗 CLI releases)
  • Click on Publish release

Finally:

  • Double-check that the releases was picked up by pkg.go.dev. You can manually request this new version via open https://pkg.go.dev/dagger.io/dagger@$GO_SDK_VERSION. The new version can take up to 60mins to appear, it's OK to move on.

Improve releasing 改善

  • Swap to the release improvement branch
git checkout improve-releasing-during-$ENGINE_VERSION
  • Bump the Go SDK version in our internal CI targets (these aren't actually used anywhere since we use the modularized go SDK - but it's good practice regardless).
go mod edit -require dagger.io/dagger@$GO_SDK_VERSION
go mod edit -require github.com/dagger/dagger/engine/distconsts@$GO_SDK_VERSION
go mod tidy
dagger develop
cd .dagger
go mod edit -require github.com/dagger/dagger/engine/distconsts@$ENGINE_VERSION
go mod tidy
cd ..

# add, commit and push the changes to the PR
git add .
git commit -s -m "chore: bump internal tooling to $ENGINE_VERSION"
git push
  • Swap back to $RELEASE_BRANCH to continue
git checkout "$RELEASE_BRANCH"

🐍 Python SDK ⏱ 5mins

  • Tag & publish:
cd sdk/python && export PYTHON_SDK_VERSION=$(changie latest) && cd ../..
git tag "sdk/python/$PYTHON_SDK_VERSION" "$SDK_GIT_SHA"
git push "$DAGGER_REPO_REMOTE" sdk/python/$PYTHON_SDK_VERSION

This will trigger the Publish Python SDK workflow which publishes dagger-io to 🐍 PyPI

The release notes should be automatically uploaded as a draft to the Dagger releases page. Navigate to the draft release, then:

⬢ TypeScript SDK ⏱ 5mins

  • Tag & publish:
cd sdk/typescript && export TYPESCRIPT_SDK_VERSION=$(changie latest) && cd ../..
git tag "sdk/typescript/$TYPESCRIPT_SDK_VERSION" "$SDK_GIT_SHA"
git push "$DAGGER_REPO_REMOTE" sdk/typescript/$TYPESCRIPT_SDK_VERSION

This will trigger the Publish TypeScript SDK workflow which publishes a new version to ⬢ npmjs.com/package/@dagger.io/dagger

The release notes should be automatically uploaded as a draft to the Dagger releases page. Navigate to the draft release, then:

  • Check that release notes look good in Preview
  • ⚠️ De-select Set as the latest release (only used for 🚙 Engine + 🚗 CLI releases)
  • Click on Publish release

🧪 Elixir SDK ⏱ 5mins

  • Tag & publish:
cd sdk/elixir && export ELIXIR_SDK_VERSION=$(changie latest) && cd ../..
git tag "sdk/elixir/$ELIXIR_SDK_VERSION" "$SDK_GIT_SHA"
git push "$DAGGER_REPO_REMOTE" sdk/elixir/$ELIXIR_SDK_VERSION

This will trigger the Publish Elixir SDK workflow which publishes a new version to 🧪 hex.pm/packages/dagger

The release notes should be automatically uploaded as a draft to the Dagger releases page. Navigate to the draft release, then:

  • Check that release notes look good in Preview
  • ⚠️ De-select Set as the latest release (only used for 🚙 Engine + 🚗 CLI releases)
  • Click on Publish release

🐘 PHP SDK ⏱ 5mins

  • Tag & publish:
cd sdk/php && export PHP_SDK_VERSION=$(changie latest) && cd ../..
git tag "sdk/php/$PHP_SDK_VERSION" "$SDK_GIT_SHA"
git push "$DAGGER_REPO_REMOTE" sdk/php/$PHP_SDK_VERSION

This will trigger the Publish PHP SDK workflow which publishes to github.com/dagger/dagger-php-sdk.

The release notes should be automatically uploaded as a draft to the Dagger releases page. Navigate to the draft release, then:

  • Check that release notes look good in Preview
  • ⚠️ De-select Set as the latest release (only used for 🚙 Engine + 🚗 CLI releases)
  • Click on Publish release

☸️ Helm chart ⏱ 2mins

  • Tag & publish:
export HELM_CHART_VERSION=v"$(awk '/^version: / { print $2 }' helm/dagger/Chart.yaml)"
git tag "helm/chart/$HELM_CHART_VERSION" "$SDK_GIT_SHA"
git push "$DAGGER_REPO_REMOTE" "helm/chart/$HELM_CHART_VERSION"

This will trigger the publish-helm-chart workflow which publishes to 🐙 registry.dagger.io/dagger-helm.

🚨 Non-main branch release only

After the Engine+SDKs are all released from the release-vX.Y.Z branch, you will need to "forward-port" a few of the commits there up to main. Namely:

  • The commits from the release notes PR, e.g. when patching v0.11.8 to v0.11.9, this commit
  • The commits from the SDK engine version bump PR, e.g. when patching v0.11.8 to v0.11.9, the commits from this PR
  • The commits from the CI engine version bump PR, e.g. when patching v0.11.8 to v0.11.9, this commit

One easy way to do this is to re-use the engine version bump PR that was created against main earlier, cherry-picking in the missing commits.

Be sure to use "Rebase and Merge" when merging the PR to main to preserve the history of the cherry-picked commits.

📒 Documentation ⏱ 5mins

Warning

Merging a documentation PR does NOT automatically deploy the new documentation to the production website.

There are two websites for documentation:

  1. Staging: https://devel.docs.dagger.io - Netlify dashboard
  2. Production: https://docs.dagger.io - Netlify dashboard

Staging release

When a PR is merged, a new deployment is created for the documentation site and it is automatically published to https://devel.docs.dagger.io via Netlify.

Use this staging website to test the documentation, including:

  • verifying that the new content appears in the navigation
  • verifying internal and external links work correctly
  • verifying that images appear correctly
  • etc.

Production release

When a PR is merged, a new production deployment is also created for https://docs.dagger.io. However, this deployment is not automatically published.

After testing the documentation using the staging website and if you are satisfied with it, manually publish the production deployment via Netlify as follows:

  • Log in to the Netlify dashboard for https://docs.dagger.io.
  • Refer to the list of "production deploys" and select the one you wish to deploy. Usually, this will be the most recent one. You can confirm this by checking the deployment hash against the latest commit hash in the dagger/dagger repository main branch.
  • On the deployment page, click the "Preview" button to once again preview/check the deployment. You can also check the deployment log to confirm there were no errors during the documentation build process.
  • If you are satisfied with the preview, click the "Publish deploy" button. This will publish the selected deployment on https://docs.dagger.io

Note

There have been cases where Netlify builds have failed with errors, but the same build succeeds when performed locally. In the past, one reason for this has been Netlify's use of a stale cache. In case you encounter this error, click "Options -> Clear cache and retry with latest branch commit" to recreate the deployment with a clean cache.

🛝 Playground ⏱ 2mins

The Dagger Playground is set to automatically update once there's a new release of the Dagger Engine.

  • Mention in the release thread on Discord that Playground can be updated to the just-released version. cc @marcosnils @matipan @gerhard

🌌 Daggerverse ⏱ 2mins

  • Mention in the release thread on Discord that Playground can be updated to the just-released version. cc @marcosnils @matipan @grouville

☁️ Dagger Cloud ⏱ 2mins

  • Mention in the release thread on Discord that Dagger Cloud can be updated to the just-released version. cc @marcosnils @matipan @sipsma

🪣 Install scripts ⏱ 2mins

  • If the install scripts install.sh or install.ps1 have changed since the last release, they must be manually updated on Amazon S3 (CloudFront should also be manually invalidated). cc @gerhard

🐙 dagger-for-github ⏱ 10mins

  • Submit PR with the version bump, e.g. dagger/dagger-for-github#123
    • e.g. if bumping 0.12.5->0.12.6, can run find . -type f -exec sed -i 's/0\.12\.5/0\.12\.6/g' {} +
  • Ask @gerhard or @jpadams to review it

Tip

We should automate the above mentioned steps same as we do with the PR which bumps the Engine version, e.g. dagger#7318

  • Once this PR is merged, tag the new full semver version
# Find the latest released patch https://github.com/dagger/dagger-for-github/releases
# or via the `gh` CLI. Use that to figure out the NEXT_PATCH_VERSION.
# For `dagger` minor bumps, bump `dagger-for-github` major version.
# For `dagger` patch bumps, bump `dagger-for-github` minor version. Use `dagger-for-github`
# patch version for fixes to bugs in `dagger-for-github`.
gh release view --repo dagger/dagger-for-github --json tagName,publishedAt

# Sign the tag, using the date as the comment, e.g. 2024-07-22
git tag --sign -m "2024-08-02" <NEXT_PATCH_VERSION>
git push origin <NEXT_PATCH_VERSION> #shouldn't need to force since new tag
  • Create a new release from the patch tag (auto-fill release notes via the GitHub UI or via the gh CLI)
  • Submit PR to change the version mentioned in Dagger docs. See example here
# --verify-tag will ensure the last tag creation step was done
gh release create --generate-notes --verify-tag <NEXT_PATCH_VERSION>
  • Force update the major version, currently v6, using the date as the comment, e.g. 2024-07-22
git tag --sign -m "2024-08-02" v6 --force
git push origin v6 --force #need to force since moving this tag

🍺 dagger Homebrew ⏱ 2mins

  • Check that Dagger Homebrew formula has been updated to latest, e.g. dagger 0.12.5. This is automated, but note that it may take several hours to trigger.

❄️ nix ⏱ 2mins

Last step

  • When all the above done, remember to add the RELEASING.md changes to the improve-releasing-during-v... PR that you have opened earlier (remember to toggle all the checkboxes back to [ ]). Here is an example: dagger#5658
  • Close the Discord release thread you created in Let the team know
  • Close the GitHub milestone you created in Let the team know
    • If there are remaining PRs/issues that were not resolved, then move them into the next milestone (or remove it from a milestone entirely)