I think there should be food generator or something or growing plant as food don't get generated like water bottles are.
In Planetbase there are growing plants and vitromeat (http://planetbase.wikia.com/wiki/Vitromeatsynthetically generated meat)

I really love your game, just there should me more clues where to find vehicle and that you can attach portable solar panels to the suite. To refill empty canister with oxygen you first need to deconstruct one right ?.
Please create a basic tutorial :)