for future reference there is a command block section in the forums.
and here is the command.
/summon Zombie ~ ~1 ~ {ArmorItems:[{id:diamond_boots,Count:1},{},{},{}],Attributes:[{Name:generic.movementSpeed,Base:0}],Fire:10000000}
P.S. I did not test this so there is a small chance it will not work(very small).
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