Remove UE 4.25 and older from the test matrix

README.md

@@ -9,11 +9,11 @@ The ue4-docker Python package contains a set of Dockerfiles and accompanying bui
 
 Key features include:
 
-- Unreal Engine 4.22.0 and newer is supported.
+- The six most recent versions of the Unreal Engine are supported (currently Unreal Engine 4.26 and newer).
 - Both Windows containers and Linux containers are supported.
 - Building and packaging Unreal Engine projects is supported.
 - Running automation tests is supported.
-- Running built Unreal Engine projects with offscreen rendering is supported via NVIDIA Docker under Linux.
+- Running built Unreal Engine projects with offscreen rendering is supported via the NVIDIA Container Toolkit under Linux.
 
 Resources:
 

test-suite/test-ue-releases.py

@@ -29,10 +29,6 @@ def __init__(
 
 # The list of Unreal Engine releases that are currently supported by ue4-docker
 SUPPORTED_RELEASES = [
-    UERelease("4.22", "4.22.3-fixed", COMMITDEPS_REPO, 2017, None),
-    UERelease("4.23", "4.23.1-fixed", COMMITDEPS_REPO, 2017, None),
-    UERelease("4.24", "4.24.3-fixed", COMMITDEPS_REPO, 2017, None),
-    UERelease("4.25", "4.25.4-fixed", COMMITDEPS_REPO, 2017, None),
     UERelease("4.26", "4.26.2-fixed", COMMITDEPS_REPO, 2017, None),
     UERelease("4.27", "4.27.2-fixed", COMMITDEPS_REPO, 2017, None),
     UERelease("5.0", "5.0.3-fixed", COMMITDEPS_REPO, 2019, "20.04"),