Added example caddy file for job

apps/caddy/caddy.hcl

@@ -0,0 +1,39 @@
+job "caddy" {
+  datacenters = [ "gribse-house", "zuma-house", "mayel-house" ]
+  type = "system"
+  priority = 90
+
+  group "caddy" {
+    network {
+      port "http_port" { static = 80 }
+      port "https_port" { static = 443 }
+    }
+
+    task "server" {
+      driver = "docker"
+
+      config {
+        image = "caddy"
+        network_mode = "host"
+        ports = [ "http_port", "https_port" ]
+      }
+
+      resources {
+        cpu = 1000
+        memory = 400
+      }
+
+      service {
+        name = "caddy-http"
+        port = "http_port"
+        address_mode = "host"
+      }
+
+      service {
+        name = "caddy-https"
+        port = "https_port"
+        address_mode = "host"
+      }
+    }
+  }
+}