diff --git a/autobuilder/Containerfile b/autobuilder/Containerfile
index 7fa85c3..cc7f433 100644
--- a/autobuilder/Containerfile
+++ b/autobuilder/Containerfile
@@ -1,10 +1,11 @@
 ARG BASEIMAGE=localhost/spark
 FROM $BASEIMAGE
-RUN pacman -Suy --noconfirm base-devel # cache
 
+COPY ./mirrorlist /etc/pacman.d/mirrorlist
 COPY gnupg /.gnupg
 COPY ./build /build
 
-COPY ./mirrorlist /etc/pacman.d/mirrorlist
+RUN pacman -Sy --noconfirm archlinux-keyring
+RUN pacman -Suy --noconfirm base-devel
 
 RUN chmod 700 /.gnupg
diff --git a/autobuilder/build-container b/autobuilder/build-container
new file mode 100755
index 0000000..dc8ede1
--- /dev/null
+++ b/autobuilder/build-container
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+podman build . -t 'spark:autobuilder'