feat: add MailCatcher NG template

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

blueprints/mailcatcher-ng/docker-compose.yml

@@ -0,0 +1,27 @@
+services:
+  mailcatcher-ng:
+    # Only the "latest" tag is published, so the image is pinned by digest
+    # (v2.3.9 of the image, MailCatcher NG 1.6.8).
+    image: stpaquet/alpinemailcatcher:latest@sha256:499c0eabca5e82b23d030706ba9d5b8b27bba5a5f34a43154ee5e68b07cba52c
+    restart: unless-stopped
+    # Same as the image default CMD, plus --persistence so caught mail
+    # survives container restarts (stored in the named volume below).
+    command: sh -c "mailcatcher --foreground --smtp-port=1025 --http-port=1080 --ip=0.0.0.0 --messages-limit=$$MAIL_LIMIT --persistence --no-quit"
+    environment:
+      - MAIL_LIMIT=${MAIL_LIMIT}
+    expose:
+      # SMTP: reachable from other services in the same Dokploy network
+      # at mailcatcher-ng:1025 (intentionally not published on the host).
+      - 1025
+      # Web UI (routed through the domain below)
+      - 1080
+    volumes:
+      - mailcatcher-data:/home/mailcatcher/.mailcatcher
+    healthcheck:
+      test: ['CMD', 'wget', '-q', '--spider', 'http://127.0.0.1:1080']
+      interval: 10s
+      timeout: 5s
+      retries: 10
+
+volumes:
+  mailcatcher-data:

blueprints/mailcatcher-ng/mailcatcher-ng.svg

@@ -0,0 +1,10 @@
+<svg class="logo-icon" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
+  <defs>
+    <linearGradient id="logoGradient" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#0d9488;stop-opacity:1"></stop>
+      <stop offset="100%" style="stop-color:#0f766e;stop-opacity:1"></stop>
+    </linearGradient>
+  </defs>
+  <path d="M 20 30 L 50 55 L 80 30 L 80 75 Q 80 80 75 80 L 25 80 Q 20 80 20 75 Z" fill="url(#logoGradient)"></path>
+  <path d="M 20 30 L 50 55 L 80 30" stroke="white" stroke-width="2" fill="none"></path>
+</svg>

blueprints/mailcatcher-ng/meta.json

@@ -0,0 +1,17 @@
+{
+  "id": "mailcatcher-ng",
+  "name": "MailCatcher NG",
+  "version": "1.6.8",
+  "description": "MailCatcher NG runs a super simple SMTP server which catches any message sent to it to display in a web interface. Point your app's SMTP settings at mailcatcher-ng:1025 and inspect every captured email in the browser.",
+  "logo": "mailcatcher-ng.svg",
+  "links": {
+    "github": "https://github.com/spaquet/mailcatcher",
+    "website": "https://spaquet.github.io/mailcatcher/",
+    "docs": "https://spaquet.github.io/docker-alpine-mailcatcher/"
+  },
+  "tags": [
+    "email",
+    "smtp",
+    "development"
+  ]
+}

blueprints/mailcatcher-ng/template.toml

@@ -0,0 +1,13 @@
+[variables]
+main_domain = "${domain}"
+
+[config]
+env = [
+  "MAIL_LIMIT=50",
+]
+mounts = []
+
+[[config.domains]]
+serviceName = "mailcatcher-ng"
+port = 1_080
+host = "${main_domain}"