diff --git a/Dockerfile.fat b/Dockerfile.fat
index 58d7164a3..cdf2ba514 100644
--- a/Dockerfile.fat
+++ b/Dockerfile.fat
@@ -28,7 +28,8 @@ FROM alpine:3.22.0@sha256:8a1f59ffb675680d47db6337b49d22281a139e9d709335b492be02
 COPY scripts /scripts
 COPY pipeline /pipeline
 COPY app/core/src/main/resources/static/fonts/*.ttf /usr/share/fonts/opentype/noto/
-COPY --from=build /app/core/build/libs/*.jar app.jar
+# first /app directory is for the build stage, second is for the final image
+COPY --from=build /app/app/core/build/libs/*.jar app.jar
 
 ARG VERSION_TAG