Dockerfile.cross: Include the tag and architecture in the directory name within the zip

Author: mstorsjo

Dockerfile.cross

@@ -39,6 +39,6 @@ COPY build-make.sh .
 RUN ./build-make.sh $CROSS_TOOLCHAIN_PREFIX --host=$HOST
 
 ARG TAG
-RUN ln -s $CROSS_TOOLCHAIN_PREFIX llvm-mingw && \
-    zip -9r /llvm-mingw-$TAG$CROSS_ARCH.zip llvm-mingw && \
+RUN ln -s $CROSS_TOOLCHAIN_PREFIX llvm-mingw-$TAG$CROSS_ARCH && \
+    zip -9r /llvm-mingw-$TAG$CROSS_ARCH.zip llvm-mingw-$TAG$CROSS_ARCH && \
     ls -lh /llvm-mingw-$TAG$CROSS_ARCH.zip