Add container registry login

packer/build.pkr.hcl

@@ -37,6 +37,8 @@ build {
     extra_arguments  = [
       "--extra-vars", "appliancetype=${source.name}",
       "--extra-vars", "ansible_ssh_pass=${var.ssh_password}",
+      "--extra-vars", "docker_username=${var.docker_username}",
+      "--extra-vars", "docker_password=${var.docker_password}"
       "--extra-vars", "repo_username=${var.repo_username}",
       "--extra-vars", "repo_password=${var.repo_password}"
     ]

packer/variables.pkr.hcl

@@ -28,3 +28,8 @@ local "iso_authenticatedurl" {
     expression = "https://${var.repo_username}:${var.repo_password}@${var.iso_url}"
     sensitive  = true
 }
+
+variable "docker_username" {}
+variable "docker_password" {
+    sensitive = true
+}