scripts: Always pull the container image

That way we make sure that stage3 is up-to-date.

Signed-off-by: Michal Rostecki <vadorovsky@protonmail.com>
Part-of: #24
Signed-off-by: Sam James <sam@gentoo.org>

Author: vadorovsky

scripts/container_test.sh

@@ -86,6 +86,7 @@ while [[ $# -gt 0 ]]; do
 done
 
 "${CONTAINER_ENGINE}" run -d \
+	--pull always \
 	--name "${CONTAINER_NAME}" \
 	-v "${TOPDIR}:/workspace" \
 	-w /workspace \