chore(image-processor): fix tfjs-node cross compile arch flags

apps/image-service/Dockerfile

@@ -15,7 +15,7 @@ RUN pnpm install --frozen-lockfile
 RUN for dir in $(find /app/node_modules -type d -path "*/@tensorflow/tfjs-node"); do \
     cd $dir && \
     rm -rf lib/napi-v8/* && \
-    npm run install -- build-addon-from-source; \
+    npm_config_build_from_source=true npm_config_arch=arm64 npm_config_target_arch=arm64 npm run install; \
     done
 # Generate models explicitly for Docker
 RUN ls -la packages/image-processor/scripts || true