feat: adding output. updating action yaml

Author: JakePartusch

action.yml

@@ -1,13 +1,15 @@
-name: "Hello World"
-description: "Greet someone and record the time"
+name: "Wait for Netlify"
+description: "Wait for Netlify Deploy Preview to complete"
 inputs:
-  who-to-greet: # id of input
-    description: "Who to greet"
+  site_name:
+    description: "The Netlify site name to test against"
     required: true
-    default: "World"
+  max_timeout:
+    description: "The max time to run the action"
+    required: false
 outputs:
-  time: # id of output
-    description: "The time we greeted you"
+  url:
+    description: "The fully qualified deploy preview URL"
 runs:
   using: "node12"
   main: "index.js"

index.js

@@ -30,6 +30,7 @@ const run = async () => {
       core.setFailed("Required field `site_name` was not provided");
     }
     const url = `https://deploy-preview-${PR_NUMBER}--${siteName}.netlify.com`;
+    core.setOutput("url", url);
     console.log(`Waiting for a 200 from: ${url}`);
     await waitForUrl(url, MAX_TIMEOUT);
   } catch (error) {