feat(info): display workflow image vetting settings (reanahub#182)

Closes reanahub/reana-server#728

Author: CameronMcClymont

client/operations/info_responses.go

@@ -202,6 +202,16 @@ func (o *infoOptions) run(cmd *cobra.Command) error {
 		if p.SupportedWorkflowEngines != nil {
 			displayInfoSliceItem(cmd, p.SupportedWorkflowEngines.Title, p.SupportedWorkflowEngines.Value)
 		}
+		if p.VettedContainerImagesAllowlist != nil {
+			displayInfoSliceItem(cmd, p.VettedContainerImagesAllowlist.Title, p.VettedContainerImagesAllowlist.Value)
+		}
+		if p.VettedContainerImagesEnabled != nil {
+			value := "False"
+			if p.VettedContainerImagesEnabled.Value {
+				value = "True"
+			}
+			cmd.Printf("%s: %s\n", p.VettedContainerImagesEnabled.Title, value)
+		}
 		if p.WorkspacesAvailable != nil {
 			displayInfoSliceItem(cmd, p.WorkspacesAvailable.Title, p.WorkspacesAvailable.Value)
 		}

cmd/info.go

@@ -57,6 +57,8 @@ func TestInfo(t *testing.T) {
 				"Users can set custom interactive session images: False",
 				"Recommended jupyter images for interactive sessions: docker.io/jupyter/scipy-notebook:notebook-6.4.5",
 				"List of supported workflow engines: cwl, serial, snakemake, yadage",
+				"List of container images allowed in user workflows: docker.io/library/python:2.7-slim, docker.io/reanahub/reana-env-root6:6.18.04",
+				"Vetted container images required for user workflows: True",
 				"CWL engine tool: cwltool",
 				"CWL engine version: 3.1.20210628163208",
 				"Yadage engine version: 0.20.1",
@@ -89,6 +91,8 @@ func TestInfo(t *testing.T) {
 				"\"interactive_sessions_custom_image_allowed\": {", "\"value\": \"False\"",
 				"\"interactive_session_recommended_jupyter_images\": {", "\"value\": [", "\"docker.io/jupyter/scipy-notebook:notebook-6.4.5\"",
 				"\"supported_workflow_engines\": {", "\"value\": [", "\"cwl\",", "\"serial\",", "\"snakemake\",", "\"yadage\"",
+				"\"vetted_container_images_allowlist\": {", "\"docker.io/library/python:2.7-slim\"",
+				"\"vetted_container_images_enabled\": {", "\"value\": true",
 				"\"cwl_engine_tool\": {", "\"value\": \"cwltool\"",
 				"\"cwl_engine_version\": {", "\"value\": \"3.1.20210628163208\"",
 				"\"yadage_engine_version\": {", "\"value\": \"0.20.1\"",

cmd/info_test.go

@@ -106,5 +106,16 @@
   "dask_enabled": {
     "title": "Dask workflows allowed in the cluster",
     "value": "False"
+  },
+  "vetted_container_images_allowlist": {
+    "title": "List of container images allowed in user workflows",
+    "value": [
+      "docker.io/library/python:2.7-slim",
+      "docker.io/reanahub/reana-env-root6:6.18.04"
+    ]
+  },
+  "vetted_container_images_enabled": {
+    "title": "Vetted container images required for user workflows",
+    "value": true
   }
 }