[server] Use public services endpoint for webhooks ENG-524

[easyCZ]

Description

1. Add publicServicesUrl to server config. This needs to be configurable as it can be customized in Dedicated
2. Default to services.DOMAIN when not provided
3. Propagate the value into server
4. Use the value of publicServicesUrl when constructing webhook URLs

Summary generated by Copilot

🤖 Generated by Copilot at e5e6e5b

This pull request adds a new configuration property publicServicesUrl to the server component of Gitpod, which defines the external URL for public services such as webhooks. It also updates the logic for generating and validating the hook URLs for various integrations, and for setting the default value of the property based on the installation domain or the experimental web app configuration.

Related Issue(s)

Fixes #

How to test

Documentation

Preview status

Gitpod was successfully deployed to your preview environment.

• 🏷️ Name - mp-server-6d4ce48162
• 🔗 URL - mp-server-6d4ce48162.preview.gitpod-dev.com/workspaces.
• 📚 Documentation - See our internal documentation for information on how to interact with your preview environment.
• 📦 Version - mp-server-webhook-services-url-gha.14224

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

• /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=all
  Valid options are all, workspace, webapp, ide, jetbrains, vscode, ssh
• with-monitoring

/hold

[svenefftinge]

Why and when would we configure differently than services.DOMAIN?

[easyCZ]

I've clarified this with Chris and will be removing the configurability, that means it will always be services.DOMAIN and we don't need to seed the value from the installer.

[easyCZ]

Can confirm the webhook registered uses services.

[easyCZ]

/unhold