Storing Containers in a Lean-To

I read on the wiki that I can store containers in my lean-to, but I can't figure out the mechanic. It says something about lifting the container up onto my shoulders. How do I do this?
PaulVasq wrote:I read on the wiki that I can store containers in my lean-to, but I can't figure out the mechanic. It says something about lifting the container up onto my shoulders. How do I do this?