[master] Start testing builds for Fedora 38 (not yet released)

[thaJeztah]

• supersedes / closes [master] Add Fedora 38 (current stable). #885

currently this is still the equivalent of "rawhide", but start testing builds in CI.

[thaJeztah]

Ah, yes, verify will fail, as we didn't build containerd packages yet;

Error: 
 Problem 1: conflicting requests
  - nothing provides containerd.io >= 1.6.4 needed by docker-ce-3:0.0.0~20221229180220.850fb69-0.fc38.aarch64
 Problem 2: package docker-ce-rootless-extras-0.0.0~20221229180220.850fb69-0.fc38.aarch64 requires docker-ce, but none of the providers can be installed
  - conflicting requests
  - nothing provides containerd.io >= 1.6.4 needed by docker-ce-3:0.0.0~20221229180220.850fb69-0.fc38.aarch64

[thaJeztah]

Projected start / cut-off of Fedora 38 from rawhide looks to be February 7; https://fedorapeople.org/groups/schedule/f-38/f-38-devel-tasks.html

Hierarchy	Name	Start	End	Duration
13	Branch Fedora Linux 38 from Rawhide	Tue 2023-02-07	Tue 2023-02-07	0
14	Rawhide starts Fedora Linux 39 development	Tue 2023-02-07	Tue 2023-02-07	0

[thaJeztah]

Looks like tini build is unhappy (segfault);

+ install_tini
+ echo 'Install tini version v0.19.0'
Install tini version v0.19.0
+ git clone https://github.com/krallin/tini.git /go/tini
Cloning into '/go/tini'...
+ cd /go/tini
+ git checkout -q v0.19.0
+ cmake .
CMake Deprecation Warning at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 2.8.12 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.

hack/dockerfile/install/tini.installer: line 8:    43 Segmentation fault      (core dumped) cmake .
error: Bad exit status from /var/tmp/rpm-tmp.r8SENH (%build)