diff --git a/build_and_push.sh b/build_and_push.sh
index 2a4c746..a329534 100755
--- a/build_and_push.sh
+++ b/build_and_push.sh
@@ -15,7 +15,7 @@ do
     fi
 
     container_image_name="${REGISTRY_DOMAIN}/${REGISTRY_USER}/${CONTAINER_NAME_PREFIX}${container}"
-    app_version="$(head -n 1 "$container/version")
+    app_version="$(head -n 1 "${container}/version")
     podman build \
         -t "${container_image_name}:latest" \
         --build-arg "ALPINE_VERSION=${ALPINE_VERSION}" \