Clean build directories before CMake

Jenkinsfile

@@ -15,25 +15,21 @@ pipeline {
             }
         }
 
-        stage('Check Windows Agent') {
+stage('Build Windows') {
     agent { label 'windows' }
     steps {
         cleanWs()
         checkout scm
 
         bat '''
-                    echo Windows agent works
-                    hostname
-                    where cmake
-                    where ninja
-                    where git
-                    java -version
-
             call "C:\\Program Files (x86)\\Microsoft Visual Studio\\2022\\BuildTools\\VC\\Auxiliary\\Build\\vcvars64.bat"
-                    where cl
+
-                    cl
+            cmake -S . -B build\\windows -G Ninja ^
+              -DCMAKE_BUILD_TYPE=Release ^
+              -DCMAKE_TOOLCHAIN_FILE=C:\\vcpkg\\scripts\\buildsystems\\vcpkg.cmake
+
+            cmake --build build\\windows
         '''
     }
-        }
+}
-    }
 }