Containerfound in street is barely sufficient (5)
I believe the answer is:
scant
'barely sufficient' is the definition.
(I've seen this in another clue)
'containerfound in street' is the wordplay.
'containerfound' becomes 'can' (I can't justify this - if you can you should give a lot more credence to this answer).
'in' means one lot of letters goes inside another.
'street' becomes 'st' (abbreviation).
'can' inserted inside 'st' is 'SCANT'.
'is' is the link.
Can you help me to learn more?
(Other definitions for scant that I've seen before include "Deficient, sparing" , "Barely adequate" , "Bare" , "Little" , "Cursory" .)