* Add a default virtualhost to catch any requests not using the specified SERVER_NAME

* Set the default to _default_

* Update documentation

Co-authored-by: Oliver Günther <mail@oliverguenther.de>

https://community.openproject.org/wp/38017

* Bump ruby to 2.7.4

* make sure to pull latest base image during tests too

Co-authored-by: Markus Kahl <machisuji@gmail.com>

We previously defined a fixed tracing rate AND a sampling tracer in the backend,
which result in everything to be traced regardless of the actual rate.

We now define a base rate for certain requests, so that we can exclude health checks and other things.
The configuration is now a factor (0 = off, default) (1 = use suggested rates), any other value x (x multiplied by suggested rates)

[ci skip]

* Flat resources/_links model

* Refactor: moving model formatting to FormsService

* unit tests fixes

* ValidateForm$ with schema

* Adapt PrincipalComponent to flat form model

* Default schema ti empty object

* Avoid circular dependency

[ci skip]

[ci skip]

Always use the :other key for falling back to locales, or return nil

to ensure the english pluralization keys are used

https://community.openproject.org/wp/37607

[ci skip]

* rely on path service

The various path services take care of correctly including the relative url root if such exists.

* fix capability check if in relative url root

* use path helper to call user form

Otherwise, a relative url root will break the functionality as the path does not reflect it

rather than, say ActionController::Parameters

using cluster mode with the previous default of 1 worker is unnecessary memory overhead