diff --git a/entrypoint.sh b/entrypoint.sh
index 2d877c9..06ef8a0 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -17,7 +17,7 @@ PYPI_INDEX_URL=$3
 
 WORKDIR=${SRCDIR:-/src}
 
-SPEC_FILE="${SRCDIR}/${4}"
+SPEC_FILE=${4:-*.spec}
 
 python -m pip install --upgrade pip wheel setuptools