给我生成一个我的世界在指令对话框里面使用的指令在我面前3格远的距离生成一个头顶箱子的僵尸僵尸死亡后掉落一个钻石

/execute as @p at @s positioned ^ ^ ^-3 run summon zombie ~ ~1 ~ {HandItems:[{id:"minecraft:diamond_sword",Count:1}],ArmorItems:[{id:"minecraft:diamond_boots",Count:1},{id:"minecraft:diamond_leggings",Count:1},{id:"minecraft:diamond_chestplate",Count:1},{id:"minecraft:diamond_helmet",Count:1}],Offers:{Recipes:[{buy:{id:"minecraft:dirt",Count:1},sell:{id:"minecraft:diamond",Count:1}}]}}