Merge pull request #51 from crazy-max/fix-outputs

Don't set outputs if empty or nil
docker · Sep 24, 2021 · 0496f17 · 0496f17
2 parents 68e5c3e + 6bbb102
commit 0496f17
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/dist/index.js b/dist/index.js
diff --git a/src/buildx.ts b/src/buildx.ts
@@ -14,7 +14,11 @@ export async function getMetadata(): Promise<string | undefined> {
   if (!fs.existsSync(metadataFile)) {
     return undefined;
   }
-  return fs.readFileSync(metadataFile, {encoding: 'utf-8'});
+  const content = fs.readFileSync(metadataFile, {encoding: 'utf-8'}).trim();
+  if (content === 'null') {
+    return undefined;
+  }
+  return content;
 }
 
 export async function isAvailable(): Promise<Boolean> {