copy artifacts later in the build step with permissions

Dockerfile.arm32v7

@@ -20,7 +20,6 @@ RUN wget https://github.com/multiarch/qemu-user-static/releases/download/${QEMU_
 FROM arm32v7/alpine:3.11
 
 COPY --from=qemu qemu-arm-static /usr/bin/
-COPY --from=build-stage /app/dist /www/
 
 ENV USER darkhttpd
 ENV GROUP darkhttpd
@@ -33,4 +32,6 @@ RUN addgroup -S ${GROUP} -g ${GID} && adduser -D -S -u ${UID} ${USER} ${GROUP} &
 
 USER ${USER}
 
+COPY --from=build-stage --chown=${USER}:${GROUP} /app/dist /www/
+
 ENTRYPOINT ["darkhttpd","/www/","--no-listing"]