[CI] Change Swift 5.9 build on Windows to use Docker image

azure-pipelines.yml

@@ -104,35 +104,8 @@ stages:
     strategy:
       matrix:
         windowsSwift59:
-          imageName: 'windows-2019'
-          SWIFT_VERSION: '5.9.2'
-          ICU_PATH: 'C:\Program Files\swift\icu-69.1\usr\bin'
-          SWIFT_DEV_PATH: 'C:\Program Files\swift\runtime-development\usr\bin'
-          XCTEST_LIB_PATH: '\x86_64'
-    pool:
-      vmImage: $(imageName)
-    variables:
-      DEVELOPER_DIR: 'C:\Library\Developer'
-      SDKROOT: 'C:\Library\Developer\Platforms\Windows.platform\Developer\SDKs\Windows.sdk'
-      SWIFTFLAGS: '--sdk $(SDKROOT) -Xswiftc -sdk -Xswiftc $(SDKROOT) -Xswiftc -resource-dir -Xswiftc $(SDKROOT)/usr/lib/swift -Xswiftc -I -Xswiftc $(SDKROOT)/usr/lib/swift -Xswiftc -L -Xswiftc $(SDKROOT)/usr/lib/swift/windows'
-    steps:
-    - pwsh: Invoke-WebRequest -Uri https://swift.org/builds/swift-$(SWIFT_VERSION)-release/windows10/swift-$(SWIFT_VERSION)-RELEASE/swift-$(SWIFT_VERSION)-RELEASE-windows10.exe -OutFile swift-install.exe
-      displayName: 'Download Swift'
-    - task: BatchScript@1
-      inputs:
-        filename: .\swift-install.exe
-        arguments: /install /quiet
-        modifyEnvironment: true
-      displayName: 'Install Swift'
-    - script: |
-        set PATH=C:\Library\Developer\Toolchains\unknown-Asserts-development.xctoolchain\usr\bin;%SWIFT_DEV_PATH%;%ICU_PATH%;%LocalAppData%\Programs\Swift;%PATH%
-        swift.exe --version
-        swift.exe build %SWIFTFLAGS%
-        swift.exe build -c release %SWIFTFLAGS%
-      displayName: 'Build SPM Debug & Release'
-  - job: windowsDocker
-    strategy:
-      matrix:
+          imageName: 'windows-2022'
+          containerImage: 'swift:5.9.2-windowsservercore-ltsc2022'
         windowsSwift510:
           imageName: 'windows-2022'
           containerImage: 'swift:5.10.1-windowsservercore-ltsc2022'