If you use a trash container, make sure to "install" drain holes. Rubbermaid makes one called a "Brute", and you can get a dolly that twists right onto the bottom of it.

see, for example

http://www.nextag.com/Rubbermaid-Brute-Quiet-Dolly-84759607/prices-html

http://www.bettymills.com/shop/product/view/RUBBERMAID/RUB263100GY.html?utm_source=search&utm_medium=sitesearch&utm_campaign=parts&utm_keyword=RUB263100GY&utm_content=Jansan

I know about the brute. I'm in food service and we have an old salad keeper that has a twist on dolly, the barrel with
preforated liner, and a spigot on the side.

I plan to line the liner basket with landscape fabric and then fill with dirt. i can leave the spigot open to let the excess water drain and the whole thing wheels all over the place

diggerb

digger, I'm not familiar with your proposed setup, but would advise you listen to pitangadiego concerning drainage - ANY excess retention of water is going to eventually cause problems for a fig tree.
As for what type of fig, here is the order of hardiness of the varieties I have: Danny's Delite (rampant grower, may not like containers. Don't know of any nursery selling it. Not many around of any age to give a rating on the fruit.); Brown Turkey (old variety, medium sized, brown fig with plenty of flavor and sweetness.); Celeste (just like BT, only smaller fruit.); Marseilles (said to be Thomas Jefferson's favorite fig, but then how many did he have to choose from. Yellow fruit, produces both breba and main crop for me. Hey, I like them too, Thomas!).
Two others which have good reputations are Sal's Fig and Petite Negronne. I have no personal experience with these. If you get nineteen more responses to your question, then you will have twenty different recommendations, I'm sure!

I live in Buffalo. same weather as you. I started with 5 gallon pots and they worked well.they were easy to transport inside for the winter,and even after 4 years, they never became root bound.hope this helps