Container is stuck in run (8)
I believe the answer is:
canister
'container' is the definition.
(I know that canister is a type of container)
'is stuck in run' is the wordplay.
'stuck in' indicates putting letters inside.
'run' becomes 'canter' (I've seen this in another clue).
'is' going within 'canter' is 'CANISTER'.
(Other definitions for canister that I've seen before include "Jar (of e.g. tea, sugar)" , "Tea-caddy" , "Metal storage container" , "Storage container, for tea say" , "Metal case" .)