chore(external-secrets): migrate to Docker harness (#2479)

Signed-off-by: Mauren Berti <[email protected]>

images/external-secrets/tests/main.tf

@@ -13,19 +13,34 @@ data "oci_string" "ref" {
   input = var.digest
 }
 
-# TODO: Convert this to imagetest_harness_container when ready
-data "oci_exec_test" "version" {
-  digest = var.digest
-  script = <<EOF
-    # We expect the command to fail, but want its output anyway.
-    ( docker run --rm $IMAGE_NAME --help 2>&1 || true ) | grep external-secrets
-  EOF
+data "imagetest_inventory" "this" {}
+
+resource "imagetest_harness_docker" "this" {
+  name      = "external-secrets-container"
+  inventory = data.imagetest_inventory.this
+
+  envs = {
+    IMAGE_NAME : var.digest
+  }
 }
 
-data "imagetest_inventory" "this" {}
+resource "imagetest_feature" "this" {
+  harness     = imagetest_harness_docker.this
+  name        = "basic container test"
+  description = "basic container test to verify that things run as expected"
+
+  steps = [
+    {
+      name = "Run container"
+      cmd  = <<EOT
+docker run --rm $IMAGE_NAME --help 2>&1
+EOT
+    }
+  ]
+}
 
 resource "imagetest_harness_k3s" "this" {
-  name      = "external-secrets"
+  name      = "external-secrets-k3s"
   inventory = data.imagetest_inventory.this
 
   sandbox = {