test: both see srtool_output and create the output file

.gitlab-ci.yml

@@ -197,7 +197,7 @@ readme_docker_release_tag:
     # Copy sources to the expected directory of srtool
     - cp -R * /build/
     # Build the runtime
-    - /srtool/build --app --json -cM
+    - /srtool/build --app --json -cM | tee -a $SRTOOL_OUTPUT
     - mv /build/runtime/$RUNTIME/target/srtool/release/wbuild/$RUNTIME-runtime/${RUNTIME}_runtime.compact.compressed.wasm $CI_PROJECT_DIR/release/
   artifacts:
     name: "runtime"