Add pgAdmin blueprint with Docker Compose and metadata

- Introduced pgAdmin entry in meta.json with relevant details and links.
- Added Docker Compose configuration for pgAdmin service.
- Included pgAdmin logo and template.toml for configuration settings.

blueprints/pgadmin/docker-compose.yml

@@ -0,0 +1,22 @@
+version: '3.8'
+
+services:
+  pgadmin:
+    image: dpage/pgadmin4:latest
+    restart: unless-stopped
+    environment:
+      - PGADMIN_DEFAULT_EMAIL=${PGADMIN_DEFAULT_EMAIL}
+      - PGADMIN_DEFAULT_PASSWORD=${PGADMIN_DEFAULT_PASSWORD}
+      - PGADMIN_CONFIG_SERVER_MODE=False
+      - PGADMIN_CONFIG_MASTER_PASSWORD_REQUIRED=False
+    volumes:
+      - pgadmin-data:/var/lib/pgadmin
+    networks:
+      - proxy
+
+volumes:
+  pgadmin-data:
+
+networks:
+  proxy:
+    external: true 

blueprints/pgadmin/template.toml

@@ -0,0 +1,22 @@
+[variables]
+main_domain = "${domain}"
+admin_email = "${email}"
+admin_password = "${password:16}"
+
+[config]
+[[config.domains]]
+serviceName = "pgadmin"
+port = 80
+host = "${main_domain}"
+
+[config.env]
+PGADMIN_DEFAULT_EMAIL = "${admin_email}"
+PGADMIN_DEFAULT_PASSWORD = "${admin_password}"
+
+[[config.mounts]]
+filePath = "/var/lib/pgadmin/servers.json"
+content = """
+{
+    "Servers": {}
+}
+""" 

meta.json

@@ -1875,5 +1875,22 @@
       "workflow",
       "nextjs"
     ]
+  },
+  {
+    "id": "pgadmin",
+    "name": "pgAdmin",
+    "version": "8.3",
+    "description": "pgAdmin is the most popular and feature rich Open Source administration and development platform for PostgreSQL, the most advanced Open Source database in the world.",
+    "links": {
+      "github": "https://github.com/pgadmin-org/pgadmin4",
+      "website": "https://www.pgadmin.org/",
+      "docs": "https://www.pgadmin.org/docs/"
+    },
+    "logo": "pgadmin.webp",
+    "tags": [
+      "database",
+      "postgres",
+      "admin"
+    ]
   }
 ]