build(docker): support Git Bash execution without rsync

Author: thewtex

src/docker/itk-wasm/build.sh

@@ -9,11 +9,12 @@ exe=$(ociExe)
 cd $script_dir
 
 mkdir -p ITKWebAssemblyInterfaceModuleCopy
-rsync -a ../../../{include,CMakeLists.txt,itk-module.cmake} ./ITKWebAssemblyInterfaceModuleCopy/
-rsync -a ../../../src/{*.cxx,CMakeLists.txt} ./ITKWebAssemblyInterfaceModuleCopy/src/
-rsync -a ../../../src/emscripten-module ./ITKWebAssemblyInterfaceModuleCopy/src/
+cp_exe=$(which rsync 2>/dev/null || which cp)
+$cp_exe -a ../../../{include,CMakeLists.txt,itk-module.cmake} ./ITKWebAssemblyInterfaceModuleCopy/
+$cp_exe -a ../../../src/{*.cxx,CMakeLists.txt} ./ITKWebAssemblyInterfaceModuleCopy/src/
+$cp_exe -a ../../../src/emscripten-module ./ITKWebAssemblyInterfaceModuleCopy/src/
 mkdir -p median-filter-pipelineCopy
-rsync -a ../../../packages/core/typescript/itk-wasm/test/pipelines/median-filter-pipeline/{CMakeLists.txt,median-filter-test.cxx} ./median-filter-pipelineCopy
+$cp_exe -a ../../../packages/core/typescript/itk-wasm/test/pipelines/median-filter-pipeline/{CMakeLists.txt,median-filter-test.cxx} ./median-filter-pipelineCopy
 
 TAG=$(date '+%Y%m%d')-$(git rev-parse --short HEAD)
 VCS_REF=$(git rev-parse --short HEAD)