remove "Windows 10" GTK theme since it doesn't work

Dockerfile

@@ -6,7 +6,7 @@ RUN useradd -ms /bin/bash rust
 ADD peldd /usr/bin/peldd
 ADD package.sh /usr/bin/package.sh
 
-RUN dnf install -y mingw64-gcc mingw64-freetype mingw64-cairo mingw64-harfbuzz mingw64-pango mingw64-poppler mingw64-gtk3 mingw64-winpthreads-static mingw64-glib2-static gcc boost zip && dnf clean all -y
+RUN dnf install -y mingw64-gcc mingw64-freetype mingw64-cairo mingw64-harfbuzz mingw64-pango mingw64-poppler mingw64-gtk3 mingw64-winpthreads-static mingw64-glib2-static gcc boost zip git && dnf clean all -y
 
 USER rust
 
@@ -18,7 +18,6 @@ RUN . ~/.cargo/env && \
     rustup target add x86_64-pc-windows-gnu
 
 ADD cargo.config /home/rust/.cargo/config
-ADD Windows-10 /home/rust/Windows10
 
 ENV PKG_CONFIG_ALLOW_CROSS=1
 ENV PKG_CONFIG_PATH=/usr/x86_64-w64-mingw32/sys-root/mingw/lib/pkgconfig/
@@ -33,6 +32,6 @@ CMD ["/usr/bin/package.sh"]
 #       $ docker build . -t PROJECTNAME-build-image
 #   3) Creating a container with the source mounted the image (which kicks off the build):
 #       $ docker create -v `pwd`:/home/rust/src --name PROJECTNAME-build PROJECTNAME-build-image
-#   4) Each time you want to build the project, start the Docker container. 
+#   4) Each time you want to build the project, start the Docker container.
 #      Add "-ai" to watch the build progress.
 #       $ docker start PROJECTNAME-build

Windows-10

@@ -1 +0,0 @@
-Subproject commit 06dd5b87781908ca0448d4577142d50796557dee

package.sh

@@ -12,8 +12,8 @@ for DLL in $DLLS
 done
 
 mkdir -p package/share/{themes,gtk-3.0}
-cp -r $GTK_INSTALL_PATH/share/glib-2.0/schemas package/share/glib-2.0
-cp -r $GTK_INSTALL_PATH/share/icons package/share/icons
+cp -r "$GTK_INSTALL_PATH"/share/glib-2.0/schemas package/share/glib-2.0
+cp -r "$GTK_INSTALL_PATH"/share/icons package/share/icons
 cp -r ~/Windows10 package/share/themes
 
 cat << EOF > package/share/gtk-3.0/settings.ini