diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8ce7be7..f1b004f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,4 +20,5 @@ jobs:
       run: |
         docker run --rm \
           -v ${{ github.workspace }}:/workspace \
+          -w /workspace \
           quay.io/singularity/singularity:v4.1.0 build container.sif Singularityfile.def