[workspace-cluster] bump docker and docker compose deps

[kylos101]

Description

Depends on https://github.com/gitpod-io/compose/releases/tag/v2.20.2-gitpod.1, refer to gitpod-io/compose#1 for background.

Also, updated related release instructions.

Summary generated by Copilot

🤖 Generated by Copilot at de650a7

Update dockerVersion and dockerComposeVersion in WORKSPACE.yaml to use the latest versions. This is part of a pull request to improve Gitpod's workspace containers.

Related Issue(s)

Fixes # n/a

How to test

From a preview environment:

1. start a workspace from https://github.com/gitpod-samples/template-docker-compose in this PR's preview environment
2. Check the docker compose version (you can also try from https://github.com/kylos101/gitpod-custom-image)

gitpod /workspace/template-docker-compose (main) $ docker compose version
Docker Compose version v2.20.2-gitpod.1
gitpod /workspace/template-docker-compose (main) $ docker-compose version
Docker Compose version v2.20.2-gitpod.1

3. Check the docker version (docker -v)
   • It won't match what we set in WORKSPACE.yaml.
   • It the workspace is lacking docker (https://github.com/kylos101/gitpod-custom-image), it won't be added (this seems like a separate docker-up bug), the behavior is the same in dogfood. Created https://linear.app/gitpod/issue/ENG-617 for posterity.

Documentation

Preview status

Gitpod was successfully deployed to your preview environment.

• 🏷️ Name - kylos101-cc8cc467fbb
• 🔗 URL - kylos101-cc8cc467fbb.preview.gitpod-dev.com/workspaces.
• 📚 Documentation - See our internal documentation for information on how to interact with your preview environment.
• 📦 Version - kylos101-compose-update-gha.14934

Build Options

Build

• /werft with-werft
  Run the build with werft instead of GHA
• leeway-no-cache
• /werft no-test
  Run Leeway with --dont-test

Publish

• /werft publish-to-npm
• /werft publish-to-jb-marketplace

Installer

• analytics=segment
• with-dedicated-emulation
• workspace-feature-flags
  Add desired feature flags to the end of the line above, space separated

Preview Environment / Integration Tests

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-large-vm
• /werft with-gce-vm
  If enabled this will create the environment on GCE infra
• with-integration-tests=workspace
  Valid options are all, workspace, webapp, ide, jetbrains, vscode, ssh. If enabled, with-preview and with-large-vm will be enabled.
• with-monitoring

/hold