This is a MINIMUM build (and it's how I play my DK), you can grab all the weapons and class passives if/once you have more skill points. I put some utility passives from Dark Brotherhood, Vampire and Assault but those are just suggestions (they really help moving around)

This skill bar is for when you WONT chug Essence of Weapon Power potions. You can use a regular Essence of Stamina potion if needed and still benefit from Maj Sav/Brut. That being said, the rest is pretty much copied from Alcast's build https://alcasthq.com/eso-stamina-dragonknight-build-pve/

You can get the rest of the CP there. The food is Dubious Camoran Throne, nice and cheap.

Try and keep everything up (Claw on your priority target) and use Shrouded Daggers as your spammable. Your ult is Standard of Might, the other being frontbar'd only for the fighters guild passive. You don't want to cast molten whip, just keep his stacks as high as you can.

Good sets to use until farming Relequen (trial) and Kinra's (DLC dungeon) are:

Hunding's (craft)
Spriggan (overland)
Leviathan (dungeon)
Briarheart (overland)

Until you have the master weapons you can use a monster set (or if you find them cool, you can always drop the master daggers). Good options are:

Selene's
Stormfist
Velidreth
Kra'gh

Remember, as you are not frontbar'ing anything, you can have the 5 pieces of (i.e.) Relequen wherever you want. As long as you have 5/5/2/2 you will be fine. If your traits/enchants aren't perfect yet, there is no problem too. You can work there. The most important is to always LIGHT ATTACK WEAVE, manage your resources, learn the dungeon/trial mechanics and try to stay as still as possible so your healer can buff you.