As for the matter raised by
@Deino -- what he is asking is not necessarily about challenging the idea that this is a carrier, but rather the satellite image we have is just a bit awkward in the sense that it is a canted sliver of the drydock, which makes the appearance of the hull seem odd.
I've overlaid the image, scaled onto GE, to demonstrate what the real thing looks like, and to get a grasp for what an approximate length/positioning of the completed hull in the drydock might look like.
First, is measuring the base hull at its current point of completion, about 145m long
Second, is taking the waterline length of a Nimitz class carrier (said to be 317m long) and roughly extending it out both from the bow and stern
Finally, extending the above out a little bit more at the bow to account for overall length inclusive of flight deck, using a representative length of a Ford class carrier (337m long)
In terms of dock space, they have more than enough room both to the bow and stern of the present hull to build the rest of a carrier sized hull. Yes we can see a few drydock blocks for the ship to the bow of the current hull, and no drydock blocks to the stern of the current hull, but that is potentially actively misleading because those can be easily moved/removed/repositioned, and should not be used as indicators of what the final hull geometry/length will be.
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I encourage people to go back to this image depicting 002/CV-17 being built over time in the same drydock, to recall that the position and visual sighting drydock block positioning may be misleading with regards to the final state of a hull.