Preheat your oven to 350°.
Spray the inside of your bread tube with nonstick cooking spray. Make sure to also spray the inside of the endcaps. Place one end on the bread tube, stand it upright and place the french bread dough inside. Place the other end on the top of the bread tube. Stand the bread tube up on a cookie sheet (to prevent any oil from seeping down into your oven) and place on the middle rack in your oven. You'll probably need to move your rack a little lower to give the tube room to stand up. Cook for one hour.
When the bread is done cooking, remove it from the oven. Remove the ends from the tube and shake the loaf out. Let it cool on a wire rack. Once it is cool, slice it into around 1/2" thick slices. Set aside.
In a medium bowl place the cream cheese, mayonnaise and italian salad dressing mix. Mix until well combined. Because I'm a fan of fancy, I put this into a piping bag fitted with a star tip.
Lay the bread slices out and pipe (or spread) the mixture on. Top each piece with a cucumber slice. You could also sprinkle some dill on top. I'm not a fan of dill, so I skip that.
Serve!