Self Host Guide https://selfhostguide.dev Free notes, fixes and guides on Coolify, Docker and running your own VPS, written from a live box. en-AU Tue, 01 Sep 2026 12:49:05 GMT What self-hosting actually costs, versus Vercel plus Supabasehttps://selfhostguide.dev/guides/what-self-hosting-actually-costs-vs-vercel-supabasehttps://selfhostguide.dev/guides/what-self-hosting-actually-costs-vs-vercel-supabaseTue, 01 Sep 2026 00:00:00 GMTThe dollar comparison is not close. The honest comparison is not about dollars, so here are the incidents that tell you what you are actually signing up for. Self-hosted Heroku alternatives in 2026, from someone running onehttps://selfhostguide.dev/guides/self-hosted-heroku-alternatives-2026https://selfhostguide.dev/guides/self-hosted-heroku-alternatives-2026Tue, 01 Sep 2026 00:00:00 GMTThe category most of these guides blur, plus what I can tell you first-hand about Coolify and what I am not going to pretend to know. Coolify quietly bakes your build secrets into the image layershttps://selfhostguide.dev/notes/coolify-bakes-build-secrets-into-image-layershttps://selfhostguide.dev/notes/coolify-bakes-build-secrets-into-image-layersTue, 01 Sep 2026 00:00:00 GMTDocker history on one of my images printed out a GitHub token, an OAuth token, and a handful of other secrets in plain text. Here is why, and the actual fix. A full VPS disk on Coolify: 1905 MB per rebuild, down to 31 MBhttps://selfhostguide.dev/notes/coolify-full-vps-disk-1905mb-per-rebuildhttps://selfhostguide.dev/notes/coolify-full-vps-disk-1905mb-per-rebuildTue, 01 Sep 2026 00:00:00 GMTThe disk didn't fill for one reason. It filled for four, and only one of them was obvious. The Next.js standalone healthcheck trap on Coolifyhttps://selfhostguide.dev/notes/nextjs-standalone-healthcheck-trap-on-coolifyhttps://selfhostguide.dev/notes/nextjs-standalone-healthcheck-trap-on-coolifyTue, 01 Sep 2026 00:00:00 GMTThe build succeeded. The container came up. Coolify still called it unhealthy. serve -s makes every URL on a multi-page site come back 200https://selfhostguide.dev/notes/serve-s-spa-fallback-soft-404https://selfhostguide.dev/notes/serve-s-spa-fallback-soft-404Tue, 01 Sep 2026 00:00:00 GMTEvery URL returned 200. That was the problem. The Coolify buildkit freeze after a Docker upgrade, and the fixhttps://selfhostguide.dev/guides/coolify-buildkit-freeze-after-docker-upgradehttps://selfhostguide.dev/guides/coolify-buildkit-freeze-after-docker-upgradeMon, 31 Aug 2026 00:00:00 GMTA Docker upgrade broke every Dockerfile-pack deploy on my Coolify server. Here is the exact error, the workaround that kept shipping, and the fix that actually resolved it. Coolify REST API traps: what actually bites when you build your own toolinghttps://selfhostguide.dev/guides/coolify-rest-api-trapshttps://selfhostguide.dev/guides/coolify-rest-api-trapsMon, 31 Aug 2026 00:00:00 GMTNotes from building my own tooling against the Coolify v4 REST API. None of these are documented anywhere obvious; all of them cost real time to find. Migrating off Supabase to self-hosted Postgres on Coolifyhttps://selfhostguide.dev/guides/migrating-supabase-to-self-hosted-postgres-coolifyhttps://selfhostguide.dev/guides/migrating-supabase-to-self-hosted-postgres-coolifyThu, 11 Jun 2026 00:00:00 GMTMoving a production app off Supabase and onto self-hosted Postgres on Coolify to kill the monthly Pro charge. The restore did not go cleanly on the first try.