I know it’s an old post, but I was looking right now at hosting Discourse on a Digital Ocean Droplet and they state that it requires a minimum of 2gigs.
Discourse requires a droplet with at least 2GB of RAM.
Yes, their 1-click install is only enabled if you select a 2GB droplet. This is because they don’t want you using swap.
If you setup a 1GB droplet, and follow the only supported guide to install discourse, it just works.
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