diff --git a/README.md b/README.md
index 676b668..44306f6 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,14 @@ Then build a builder image from `./autobuilder`:
 cd ./autobuilder; podman build --rm -t localhost/spark:autobuilder .
 ```
 
+Example for Arch images:
+```
+cd autobuilder
+podman build --build-arg BASEIMAGE=docker.io/archlinux:base-devel --rm -t localhost/arch:autobuilder .
+
+PODMAN_IMAGE=localhost/arch:autobuilder makepkg-ci /tmp/pkg https://code.fleshless.org/PKGBUILDs/ssm-git
+```
+
 makepkg-podman
 --------------
 
diff --git a/autobuilder/Containerfile b/autobuilder/Containerfile
index 9d404f1..d2f1e42 100644
--- a/autobuilder/Containerfile
+++ b/autobuilder/Containerfile
@@ -1,4 +1,5 @@
-FROM localhost/spark
+ARG BASEIMAGE=localhost/spark
+FROM $BASEIMAGE
 RUN pacman -Suy --noconfirm base-devel
 
 COPY gnupg /.gnupg