Fix race condition for BCI-init systemd test

Problem: In some cases, the container is not ready yet,
to allow commands.
Solution: Wait until the container is ready.

https://progress.opensuse.org/issues/134687

tests/containers/podman_bci_systemd.pm

@@ -10,7 +10,7 @@
 use Mojo::Base 'containers::basetest';
 use testapi;
 use serial_terminal 'select_serial_terminal';
-use utils qw(validate_script_output_retry);
+use utils;
 
 sub run {
     my ($self, $args) = @_;
@@ -21,7 +21,10 @@ sub run {
     my $image = get_var("CONTAINER_IMAGE_TO_TEST", "registry.suse.com/bci/bci-init:latest");
 
     record_info('Test', 'Launch a container with systemd');
-    assert_script_run("podman run -d -p 80:80 --name nginx $image");
+    assert_script_run("podman run -d -p 80:80 --health-cmd='curl http://localhost' --name nginx $image");
+
+    # Wait for the container to be up
+    script_retry("podman ps | grep nginx | grep healthy", retry => 10, delay => 15);
 
     record_info('Test', 'Install nginx');
     assert_script_run("podman exec nginx zypper -n in nginx");