test: fix translate.go test following userns merge (#1444)

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

.all-contributorsrc

@@ -240,7 +240,7 @@
       "profile": "https://github.com/dbreyfogle",
       "contributions": [
         "doc"
-        ]
+      ]
     },
     {
       "login": "aabouzaid",
@@ -252,6 +252,15 @@
         "code",
         "doc"
       ]
+    },
+    {
+      "login": "proudier",
+      "name": "Pierre Roudier",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1056127?v=4",
+      "profile": "https://roudier.io",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -8,7 +8,7 @@
 [![Go Report Card](https://goreportcard.com/badge/github.com/k3d-io/k3d?style=flat-square)](https://goreportcard.com/report/github.com/k3d-io/k3d)
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-25-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-27-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 [![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg)](code_of_conduct.md)
 
@@ -167,6 +167,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/stopanko"><img src="https://avatars.githubusercontent.com/u/3759349?v=4?s=100" width="100px;" alt="stopanko"/><br /><sub><b>stopanko</b></sub></a><br /><a href="#financial-stopanko" title="Financial">💵</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/dbreyfogle"><img src="https://avatars.githubusercontent.com/u/27653146?v=4?s=100" width="100px;" alt="Danny Breyfogle"/><br /><sub><b>Danny Breyfogle</b></sub></a><br /><a href="https://github.com/k3d-io/k3d/commits?author=dbreyfogle" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://tech.aabouzaid.com/"><img src="https://avatars.githubusercontent.com/u/6760103?v=4?s=100" width="100px;" alt="Ahmed AbouZaid"/><br /><sub><b>Ahmed AbouZaid</b></sub></a><br /><a href="#ideas-aabouzaid" title="Ideas, Planning, & Feedback">🤔</a> <a href="https://github.com/k3d-io/k3d/commits?author=aabouzaid" title="Code">💻</a> <a href="https://github.com/k3d-io/k3d/commits?author=aabouzaid" title="Documentation">📖</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://roudier.io"><img src="https://avatars.githubusercontent.com/u/1056127?v=4?s=100" width="100px;" alt="Pierre Roudier"/><br /><sub><b>Pierre Roudier</b></sub></a><br /><a href="https://github.com/k3d-io/k3d/commits?author=proudier" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>

pkg/runtimes/docker/translate.go

@@ -127,6 +127,9 @@ func TranslateNodeToContainer(node *k3d.Node) (*NodeInDocker, error) {
 	// TODO: can we replace this by a reduced set of capabilities?
 	hostConfig.Privileged = true
 
+	// Privileged containers require userns=host when Docker has userns-remap enabled
+	hostConfig.UsernsMode = "host"
+
 	if node.HostPidMode {
 		hostConfig.PidMode = "host"
 	}

pkg/runtimes/docker/translate_test.go

@@ -81,6 +81,7 @@ func TestTranslateNodeToContainer(t *testing.T) {
 			},
 			Init:       &init,
 			Privileged: true,
+			UsernsMode: "host",
 			Tmpfs:      map[string]string{"/run": "", "/var/run": ""},
 			PortBindings: nat.PortMap{
 				"6443/tcp": {