diff --git a/Dockerfile b/Dockerfile
index 73123cb..59460c7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -40,7 +40,7 @@ RUN ./build-libcxx.sh $TOOLCHAIN_PREFIX
 WORKDIR /build
 ENV PATH=$TOOLCHAIN_PREFIX/bin:$PATH
 
-COPY hello.c hello.cpp hello-exception.cpp hello-tls.c ./hello/
+COPY hello/*.c hello/*.cpp ./hello/
 RUN cd hello && \
     for arch in $TOOLCHAIN_ARCHS; do \
         $arch-w64-mingw32-clang hello.c -o hello-$arch.exe || exit 1; \
diff --git a/hello-exception.cpp b/hello/hello-exception.cpp
similarity index 100%
rename from hello-exception.cpp
rename to hello/hello-exception.cpp
diff --git a/hello-tls.c b/hello/hello-tls.c
similarity index 100%
rename from hello-tls.c
rename to hello/hello-tls.c
diff --git a/hello.c b/hello/hello.c
similarity index 100%
rename from hello.c
rename to hello/hello.c
diff --git a/hello.cpp b/hello/hello.cpp
similarity index 100%
rename from hello.cpp
rename to hello/hello.cpp