Switch to cmd array so we can redact

lib/mrsk/commands.rb

@@ -1,3 +1,5 @@
+require "sshkit"
+
 module Mrsk::Commands
   class Base
     attr_accessor :config
@@ -5,6 +7,16 @@ module Mrsk::Commands
     def initialize(config)
       @config = config
     end
+
+    private
+      def docker(*args)
+        args.unshift :docker
+      end
+
+      # Copied from SSHKit::Backend::Abstract#redact to be available inside Commands classes
+      def redact(arg) # Used in execute_command to hide redact() args a user passes in
+        arg.to_s.extend(SSHKit::Redaction) # to_s due to our inability to extend Integer, etc
+      end      
   end
 end