Feature: Add base path (#16)

* Add base path to test which defaults to /

* Add base_path to readme

README.md

@@ -16,6 +16,10 @@ Optional — Stringified HTTP Header object key/value pairs to send in requests
 
 Optional — The amount of time to spend waiting on Netlify. Defaults to `60` seconds
 
+### `base_path`
+
+Optional — The page that needs to be tested for 200. Defaults to "/" (eg: `https://{site_name}.netlify.app{base_path}`)
+
 ## Outputs
 
 ### `url`

action.yml

@@ -13,6 +13,10 @@ inputs:
   max_timeout:
     description: "The max time to run the action"
     required: false
+  base_path:
+    description: "Base path to test"
+    required: false
+    default: "/"
 outputs:
   url:
     description: "The fully qualified deploy preview URL"

index.js

@@ -26,10 +26,11 @@ const run = async () => {
     }
     const MAX_TIMEOUT = Number(core.getInput("max_timeout")) || 60;
     const siteName = core.getInput("site_name");
+    const basePath = core.getInput("base_path");
     if (!siteName) {
       core.setFailed("Required field `site_name` was not provided");
     }
-    const url = `https://deploy-preview-${PR_NUMBER}--${siteName}.netlify.app`;
+    const url = `https://deploy-preview-${PR_NUMBER}--${siteName}.netlify.app${basePath}`;
     core.setOutput("url", url);
     const extraHeaders = core.getInput("request_headers");
     const headers = !extraHeaders ? {} : JSON.parse(extraHeaders)