Docker – What is proper way to rebuild and push updated image to docker cloud?

I found the problem, thanks to @lorenzvth7!

I’ve had two images with same tag (which i was pushing to cloud).

Solution is:

1. Inspect your images and find two or more with the same tag:

   docker images 
   

2. Delete them:

   docker rmi --force 'image id'
   

3. Thats it! Follow steps from my question above.