CI debug: copy instead of mount stable sources dir

Author: be32826

.github/workflows/build.yml

@@ -178,8 +178,11 @@ jobs:
               VERSIONS=$(echo "$VERSIONS_JSON" | jq -r '.[]' | xargs)
             fi
 
-            # Mount the stable source directory instead of the run-specific one
-            ./build.sh --targets "$TARGET" ${VERSIONS:+--versions "$VERSIONS"} --extra-docker-opts "-v $SOURCES_DIR:/app/linux"
+            # Copy the stable source directory instead of the run-specific one
+            rm -rf linux
+            cp -r "$SOURCES_DIR" linux
+
+            ./build.sh --targets "$TARGET" ${VERSIONS:+--versions "$VERSIONS"}
 
             # Use a run-specific output directory to avoid clashes
             BUILD_OUTPUT="/home/runner/_shared/runs/$GITHUB_RUN_ID/build-output"