Update docker

[tianon]

Changes:

• docker-library/docker@b570add: Merge pull request Remove Windows Server 2019 / 1809 docker#538 from infosiftr/rm-1809
• docker-library/docker@ba5f733: Remove Windows Server 2019 / 1809

[github-actions]

Diff for 3845b49:

diff --git a/_bashbrew-cat b/_bashbrew-cat
index c2df3c3..1f4eb75 100644
--- a/_bashbrew-cat
+++ b/_bashbrew-cat
@@ -17,14 +17,6 @@ Architectures: amd64, arm64v8
 GitCommit: ac216a48589a02162b04badf29b22a09ca5c9043
 Directory: 28/dind-rootless
 
-Tags: 28.2.2-windowsservercore-1809, 28.2-windowsservercore-1809, 28-windowsservercore-1809, windowsservercore-1809
-SharedTags: 28.2.2-windowsservercore, 28.2-windowsservercore, 28-windowsservercore, windowsservercore
-Architectures: windows-amd64
-GitCommit: ac216a48589a02162b04badf29b22a09ca5c9043
-Directory: 28/windows/windowsservercore-1809
-Builder: classic
-Constraints: windowsservercore-1809
-
 Tags: 28.2.2-windowsservercore-ltsc2022, 28.2-windowsservercore-ltsc2022, 28-windowsservercore-ltsc2022, windowsservercore-ltsc2022
 SharedTags: 28.2.2-windowsservercore, 28.2-windowsservercore, 28-windowsservercore, windowsservercore
 Architectures: windows-amd64
diff --git a/_bashbrew-list b/_bashbrew-list
index 97e5761..9ba1bf7 100644
--- a/_bashbrew-list
+++ b/_bashbrew-list
@@ -3,7 +3,6 @@ docker:28-cli
 docker:28-dind
 docker:28-dind-rootless
 docker:28-windowsservercore
-docker:28-windowsservercore-1809
 docker:28-windowsservercore-ltsc2022
 docker:28-windowsservercore-ltsc2025
 docker:28.2
@@ -11,7 +10,6 @@ docker:28.2-cli
 docker:28.2-dind
 docker:28.2-dind-rootless
 docker:28.2-windowsservercore
-docker:28.2-windowsservercore-1809
 docker:28.2-windowsservercore-ltsc2022
 docker:28.2-windowsservercore-ltsc2025
 docker:28.2.2
@@ -22,7 +20,6 @@ docker:28.2.2-dind
 docker:28.2.2-dind-alpine3.21
 docker:28.2.2-dind-rootless
 docker:28.2.2-windowsservercore
-docker:28.2.2-windowsservercore-1809
 docker:28.2.2-windowsservercore-ltsc2022
 docker:28.2.2-windowsservercore-ltsc2025
 docker:cli
@@ -30,6 +27,5 @@ docker:dind
 docker:dind-rootless
 docker:latest
 docker:windowsservercore
-docker:windowsservercore-1809
 docker:windowsservercore-ltsc2022
 docker:windowsservercore-ltsc2025
diff --git a/_bashbrew-list-build-order b/_bashbrew-list-build-order
index 52a7d3c..73b2d1a 100644
--- a/_bashbrew-list-build-order
+++ b/_bashbrew-list-build-order
@@ -1,5 +1,4 @@
 docker:28.2.2-cli-alpine3.21
-docker:windowsservercore-1809
 docker:windowsservercore-ltsc2022
 docker:windowsservercore-ltsc2025
 docker:28.2.2-alpine3.21
diff --git a/docker_windowsservercore-1809/Dockerfile b/docker_windowsservercore-1809/Dockerfile
deleted file mode 100644
index 0da7164..0000000

Relevant Maintainers:

• docker: @tianon @yosifkit