Guys, my unfortunately daily rant of my pm

I was told to create a docker env for our team. Good. Document the process so everyone can know what to do. Good.

My PM follows what he wants to instead of step by step and changes whatever he wants to.

I am asked for help because he doesnt know. No prob.

Me: "Do this, do this and.."
PM: "that doesnt matter, trust me, I could change it and.."
Me: "...and it wont work"
PM: "I know suff too, check" *does his changes aaaaaand doesnt work*
* awkward staring*

That happened a while ago.
This week, he crashed his git repo because he was doing things in docker team (including him) decided not to.

Took me more enough time explaining him "you are not supposed to do that in the container" funny fact he wanted to prove that his way was right and even if he did my way it would crash.

Sooooo he did my way just to prove how wrong I was. Everything worked flawlessly. Rage-still-awkward staring.

Plus the "aww that's weird. I dont know how this happened"