Improve error message when podman is present but podman machine isn't

Fixes #3405

Signed-off-by: David Thompson <davidethompson@me.com>

Author: datho7561

src/openshift/component.ts

@@ -22,6 +22,7 @@ import DescribeViewLoader from '../webview/describe/describeViewLoader';
 import LogViewLoader from '../webview/log/LogViewLoader';
 import { OpenShiftTerminalApi, OpenShiftTerminalManager } from '../webview/openshift-terminal/openShiftTerminal';
 import OpenShiftItem, { clusterRequired } from './openshiftItem';
+import { which } from 'shelljs';
 
 function createCancelledResult(stepName: string): any {
     const cancelledResult: any = new String('');
@@ -208,12 +209,23 @@ export class Component extends OpenShiftItem {
         if (await Component.odo.isPodmanPresent()) {
             return Component.devRunOn(component, 'podman');
         }
-        void window.showErrorMessage('Podman is not present in the system, please install podman on your machine and try again.', 'Install podman')
-            .then(async (result) => {
-                if (result === 'Install podman') {
-                    await commands.executeCommand('vscode.open', Uri.parse('https://podman.io/'));
-                }
-            });
+        const podmanOnPath = which('podman');
+        if (podmanOnPath) {
+            const SETUP_INSTRUCTIONS = 'Open setup instructions';
+            void window.showErrorMessage('Podman is present on the system, but is not fully set up yet.', SETUP_INSTRUCTIONS)
+                .then(result => {
+                    if (result === SETUP_INSTRUCTIONS) {
+                        void commands.executeCommand('vscode.open', Uri.parse('https://podman.io/docs/installation'));
+                    }
+                });
+        } else {
+            void window.showErrorMessage('Podman is not present in the system, please install podman on your machine and try again.', 'Install podman')
+                .then(async (result) => {
+                    if (result === 'Install podman') {
+                        await commands.executeCommand('vscode.open', Uri.parse('https://podman.io/'));
+                    }
+                });
+        }
         return;
     }