Check it out. If you want to make some proper prison buck than you will need a shampoo bottle (You can use any milk jug or 2 liter bottle but they don't have those in prison).
You will need to go pick up some mixed fruit cups, sugar, and yeast. Dump the fruit cup into the shampoo bottle. Add three table spoons of sugar the same for the yeast. Fill the shampoo bottle about 3/4 full. Then just let it ferment until it reaches the potency desired. Don't forget to burp the bottle or it will explode and that crap stinks. Now there are much better ways making alcohol but you asked how to make prison wine. Which we use to call buck. So there you go it tastes like shit and will probably make you go blind but it will get you drunk. Have fun.