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If you're just using Vagrant as a harness to run Docker-ready VMs, you only need to spin up one VM to host multiple Docker containers, so it works decently on earlier (definitely 2010!) laptops.

Yes, just to confirm I run loads of stuff on a 2010 MBP... not docker but similar and heavier workloads. With caching as advertised in the linked article, you should see no issues. Just be sure to fork over adequate memory to your VM to stop it swapping over a seriously slow, paravirtualized block device with parallel applications causing host OS contention.

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