OK, just figured it out. Removing the double quotes from the last element gets things working as expected: 

my $cmd = [ 'docker', 'run', '-d', '--name', 'xxxyyyzzz-blah', 'alpine
+', '/bin/ash', '-c', '/usr/bi/tail -f /dev/null' ];

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$PM = "Perl Monk's";
$MC = "Most Clueless Friar Abbot Bishop Pontiff Deacon Curate Priest Vicar Parson";
$nysus = $PM . ' ' . $MC;
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In reply to Re: IPC::Run3 not working as expected when running Docker command by nysus
in thread IPC::Run3 not working as expected when running Docker command by nysus

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