'some' changes

deploy/signup-confirmation/README.md

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+# Signup Confirmation Page
+
+This serves a very small static confirmation page with `nginx`.
+
+## Run
+
+```bash
+docker compose up -d
+```
+
+It will be available on port `8080` on the VPS.
+
+## Files
+
+- `docker-compose.yml`: starts `nginx:alpine`
+- `site/index.html`: the page shown after email confirmation
+
+## Notes
+
+- If you already have a reverse proxy on the VPS, point your domain or subdomain to `http://localhost:8080`.
+- If you want this container to bind directly to port `80`, change `8080:80` to `80:80` in `docker-compose.yml`.