Do demolish the dome, it’s condemned! (6)
I believe the answer is:
doomed
'condemned' is the definition.
('doom' can be a synonym of 'condemn')
'do demolish the dome' is the wordplay.
'demolish' indicates an anagram.
'dome' with letters rearranged gives 'omed'.
'do'+'omed'='DOOMED'
'it's' is the link.
(Other definitions for doomed that I've seen before include "Consigned or sentenced to hell" , "Damned or condemned" , "Condemned to certain death" , "Condemned to hell" , "Greek god" .)