In my case, it was not actually stuck. Earlier it asked my confirmation and started to print the Docker build logs so I missed the question:

Do you wish to deploy these changes (y/n)? #0 building with "desktop-linux" instance using docker driver

#1 [internal] load .dockerignore
#1 transferring context: 2B done
#1 DONE 0.0s

So I just had to press "Enter" and it printed the question again.