diff --git a/makefiles/containers.mk b/makefiles/containers.mk
index 751c20a..b02bd05 100644
--- a/makefiles/containers.mk
+++ b/makefiles/containers.mk
@@ -8,6 +8,9 @@ $(warning Warning: Docker is not recommended, use Podman instead.)
 CTN_USERMAP = --user=$(shell id -u):$(shell id -g) -e HOME=/tmp
 endif
 
+# Ensure PWD is defined for volume mounts (fallback to current directory)
+PWD ?= $(CURDIR)
+
 # Packaging OCI image, to build rpm, deb, pacman, tar packages
 # We changes the keep-id uid/gid for Podman, so that the user inside the container is the same as the user outside.
 # For Docker, as it doesn't support userns, we use common options, but it may fail...