.

jobs/minecraft.nomad.hcl

@@ -1,21 +1,14 @@
-variable "mode" {
-  type = string
-  description = "gamemode to advertise as; e.g. lobby or bedwars"
-}
-
-variable "image" {
-  type = string
-  description = "docker image to use"
-}
-
-variable "plugins" {
-  type = list(string)
-  description = "list of URLs to download to the plugins directory"
-  default = []
-}
-
 job "minecraft" {
-  type = "service"
+  type = "batch"
+
+	parameterized {
+	  meta_required = ["mode", "image"]
+    meta_optional = ["plugins"]
+	}
+
+  meta {
+    plugins = ""
+  }
 
   group "lobby" {
     count = 1
@@ -31,10 +24,12 @@ job "minecraft" {
     }
 
     service {
-      name = var.mode
+      name = "minecraft"
       port = "minecraft"
       address_mode = "alloc"
-      tags = ["minecraft", var.mode]
+      meta {
+        mode = "${NOMAD_META_MODE}"
+      }
       check {
         type = "tcp"
         interval = "5s"
@@ -42,22 +37,37 @@ job "minecraft" {
       }
     }
 
-    task "run" {
+    task "download-plugins" {
       driver = "docker"
 
-      dynamic "artifact" {
-        for_each = var.plugins
-        content {
-          source      = artifact.value
-          destination = "local/plugins"
-        }
+      lifecycle {
+        hook = "prestart"
+        sidecar = false
       }
 
       config {
-        image = var.image
-        force_pull = false
+        image = "busybox"
+        command = "sh"
+        volumes = ["../alloc/data:/mnt"]
+        args = [
+          "-cxe",
+          <<-EOF
+          set -eu
+          mkdir /mnt/plugins
+          wget -P /mnt/plugins ${NOMAD_META_PLUGINS}
+          EOF
+        ]
+      }
+    }
+
+    task "run" {
+      driver = "docker"
+
+      config {
+        image = "${NOMAD_META_IMAGE}"
+        force_pull = true
         ports = ["minecraft"]
-        volumes = ["local:/mnt"]
+        volumes = ["../alloc/data:/mnt"]
       }
 
       env {