Preserve llvm-project.src directory in crossdeps-builder (#1456)

Author: mthalman

src/azurelinux/3.0/net10.0/crossdeps-builder/amd64/Dockerfile

@@ -84,7 +84,8 @@ RUN \
     make install && \
     popd && \
     # Cleanup
-    rm -rf llvm-project.src build
+    # Don't clean llvm-project.src since it is used by derived images
+    rm -rf build
 
 ENV PATH="/opt/llvm/bin:$PATH"
 

src/azurelinux/3.0/net8.0/crossdeps-builder/amd64/Dockerfile

@@ -84,7 +84,8 @@ RUN \
     make install && \
     popd && \
     # Cleanup
-    rm -rf llvm-project.src build
+    # Don't clean llvm-project.src since it is used by derived images
+    rm -rf build
 
 ENV PATH="/opt/llvm/bin:$PATH"
 

src/azurelinux/3.0/net9.0/crossdeps-builder/amd64/Dockerfile

@@ -84,7 +84,8 @@ RUN \
     make install && \
     popd && \
     # Cleanup
-    rm -rf llvm-project.src build
+    # Don't clean llvm-project.src since it is used by derived images
+    rm -rf build
 
 ENV PATH="/opt/llvm/bin:$PATH"