feat(GoatCounter): Add GoatCounter template

[sadiqAlAboudi]

What is this PR about?

New PR of GoatCounter

The template provides a zero-touch deployment of GoatCounter 2.7 with PostgreSQL 18, including:

• Persistent PostgreSQL storage using a named volume
• Automatically generated database password
• PostgreSQL healthcheck
• Automatic domain and HTTPS configuration through Dokploy

Checklist

Before submitting this PR, please make sure that:

• I have read the suggestions in the README.md file https://github.com/Dokploy/templates?tab=readme-ov-file#general-requirements-when-creating-a-template
• I have tested the template in my instance, so the maintainers don't spend time trying to figure out what's wrong.
• I have added tests that demonstrate that my correction works or that my new feature works.

Screenshots or Videos

[github-actions]

built with Refined Cloudflare Pages Action

⚡ Cloudflare Pages Deployment

Name	Status	Preview	Last Commit
templates	✅ Ready (View Log)	Visit Preview	741ca35

[Siumauricio]

Tested with a real deploy on a Dokploy instance (exact template from this branch merged with current canary). Zero-touch as described: no manual db create site step needed.

Image

• arp242/goatcounter:2.7 is the official image (README: "GoatCounter is available on DockerHub at arp242/goatcounter"); same digest as 2.7.0, pushed 2025-12-15 = upstream release v2.7.0. Manifest pulls anonymously (200).
• GOATCOUNTER_DB / GOATCOUNTER_LISTEN env vars and serve -automigrate are the documented Docker configuration; with -listen on :8080 GoatCounter defaults to plain HTTP behind the proxy, so no -tls flag is needed.
• postgres:18-alpine with the volume on /var/lib/postgresql (not /data) — correct for PG 18.

Validators: generate-meta.js --check ✅ (519 templates), validate-docker-compose.ts ✅, validate-template.ts ✅. ${DB_PASSWORD:?…} interpolation and env = [...] form both worked in Dokploy.

Deploy

• postgres-1: healthy (PostgreSQL 18.6 … ready to accept connections). goatcounter-1: running, RestartCount 0; migrations applied, log says No sites yet; access the web interface or use the CLI to create one.
• https = true was honored: Dokploy created the domain as https://….
• Via the domain: GET / → 200 «Create your first site and user» wizard. Submitted it (email/password/vhost) → 303 → dashboard Help | Settings | admin@ | Sign out … No data received, i.e. site + user created and logged in. /count.js → 200, /count?p=/test → 200.

LGTM.