diff --git a/test/Dockerfile b/test/Dockerfile
index 8763519..3c5e42e 100644
--- a/test/Dockerfile
+++ b/test/Dockerfile
@@ -14,6 +14,7 @@ RUN apk add --no-cache \
     curl \
     && pip3 install --break-system-packages --no-cache-dir -U pip  \
     && pip3 install --break-system-packages --no-cache-dir -r requirements.txt \
+    # Not 100% sure what this line does, but it's always been in the Dockerfile (aside from pointing at a different file)
     # Tests fall over without it. Investigate later.
     && sed -i 's|/bin/sh|/bin/bash|g' /usr/lib/python3.11/site-packages/testinfra/backend/docker.py