Can't put files with {{name}} in container

Nomad
1

I ran the following job and it worked.

job "helloworld" {
  datacenters = ["dc1","ap-northeast-1"]

  group "hello" {
    task "hello" {
      driver = "docker"

      config {
        image   = "alpine:3.16.0"
        command = "/bin/sh"
        args    = ["-c", "echo 'Hello World!' && ls -l local/hello.txt && cat local/hello.txt && sleep infinity"]
      }
      template {
        destination = "local/hello.txt"
        data = <<EOF
hello!
EOF
      }
      resources {
        cpu    = 2
        memory = 20
      }
    }
  }
}

I whoud like to modify it as follows.

$ git diff
diff --git a/samples/hello.hcl b/samples/hello.hcl
index acc95e4..1ff95b5 100644
--- a/samples/hello.hcl
+++ b/samples/hello.hcl
@@ -13,7 +13,7 @@ job "helloworld" {
       template {
         destination = "local/hello.txt"
         data = <<EOF
-hello!
+hello!{{name}}
 EOF
       }
       resources {

When I run the job, it fails to start with the error below.

$ nomad alloc status c8e | tail -6
Time                  Type             Description
2022-08-03T05:11:16Z  Killing          Sent interrupt. Waiting 5s before force killing
2022-08-03T05:11:14Z  Alloc Unhealthy  Unhealthy because of failed task
2022-08-03T05:11:14Z  Killing          Template failed: (dynamic): parse: template: :1: function "name" not defined
2022-08-03T05:11:14Z  Task Setup       Building Task Directory
2022-08-03T05:11:08Z  Received         Task received by client
2

Hi @ksaito1125, if you want to have literal {{ and }} in the output of your template, I believe you’ll need to set template.left_delimiter and template.right_delimiter to some other values.