I'm running this instance I'm posting this from (single user) on a Hetzner CX21 (2 core / 4 GB ram / 40 GB storage)
The current stats (according to podman) are as follows
NAME CPU % MEM USAGE / LIMIT MEM % NET IO BLOCK IO PIDS CPU TIME AVG CPU %
postgres 0.41% 95.12MB / 4.005GB 2.38% 1.863GB / 346.5MB 240.6MB / 10.28GB 11 16m26.041917s 0.55%
caddy 0.03% 54.47MB / 4.005GB 1.36% 244.9MB / 239.3MB 138.7MB / 20MB 9 2m41.545823s 0.40%
lemmy-be 0.10% 22.95MB / 4.005GB 0.57% 627.4MB / 2.831GB 169.4MB / 13.71MB 5 10m25.284369s 1.30%
pict-rs 0.15% 32.23MB / 4.005GB 0.80% 207.1MB / 264.7MB 584.5MB / 460.3MB 13 14m32.532772s 1.82%
lemmy-ui 0.02% 37MB / 4.005GB 0.92% 53.42MB / 10.18MB 231.1MB / 34.19MB 12 26.062038s 0.05%
Net IO is inaccurate as that also includes networking between the individual containers (I'm definitely not exposing postgres to the wider world, at least not intentionally)
Oh, and images are using about 200MB disk space so far, although this server hasn't been up for more than 24 hours even, so we'll see how that goes.