Simplify build since I only support x86_64 currently.

k8s/run.sh

@@ -1,6 +1,14 @@
+echo "========> Building minimal."
 sudo podman run --rm \
      --privileged \
      -v $PWD:/project:Z \
      -w /project \
      localhost/j7s-os-builder:latest \
      make cs9-qemu-minimal-ostree.x86_64.repo
+echo "========> Building container."
+sudo podman run --rm \
+     --privileged \
+     -v $PWD:/project:Z \
+     -w /project \
+     localhost/j7s-os-builder:latest \
+     make cs9-qemu-container-ostree.x86_64.repo