Surely, the resemblance is intentional... but so are the differences:
The similarities include the framing of the picture. Notice how the side of the collar and lapel line up under the ear (the famous ear!) and how much of the top of the head is showing, with the chin down. There's a lack of symmetry in the eyes, and a distinctive arced wrinkle over his left eye.
But the mugshot face has garish color and harsh light and shade and a deep frown line on the left side of the mouth. The official portrait lighting puts the shadow where it is flattering and where it reveals the individuality and humanity of the face. By comparison, mugshot Trump seems cartoonish. It's almost as if the light were adjusted to create the look of a Hitler mustache.
In both pictures Trump's right eye seems more active. It's more narrowly pinched than his left eye. It's the eye that's looking right into you. The portrait eye is gentler, wiser, and it influences my interpretation of the mugshot eye. Mugshot Trump is angry. And, oh!, those mugshot eyebrows. They overhang the eyes ominously. He's saying he will fight, fight, fight. Portrait Trump is more complex.
What do you see in him? Whatever it is, it includes his intent to make you think about the mugshot and all that it represents. His adversaries threw everything they could at him, and he fought back and triumphed. But he's not smiling. He's not the Trump in the 2017 portrait:
But who is he? Who is he, now that he's Trump 47?