As per https://aws.amazon.com/lightsail/pricing/ , running a lightsail VPS with 512 MB Memory, 1 Core Processor costs $3.50 a month.
However, in that same link it shows that the lowest cost of containerized app on the service is twice as much at $7.00 a month with vCPU: 0.25 (shared) and RAM: 512MB
I'm not sure if these specs are directly comparable but it even seems like you get less processing power with this configuration as well.
So why wouldn't I just use the first option and setup docker in the VPS and run my containerized app that way? Amazon does just that in one of their own tutorials https://aws.amazon.com/blogs/compute/building-a-pocket-platform-as-a-service-with-amazon-lightsail/
What am I missing?