Add modification of scoped registry

Author: dsame

src/authutil.ts

@@ -29,7 +29,7 @@ function writeRegistryToFile(
     scope = '@' + scope;
   }
   if (scope) {
-    scope = scope.toLowerCase();
+    scope = scope.toLowerCase() + ':';
   }
 
   core.debug(`Setting auth in ${fileLocation}`);
@@ -38,17 +38,15 @@ function writeRegistryToFile(
     const curContents: string = fs.readFileSync(fileLocation, 'utf8');
     curContents.split(os.EOL).forEach((line: string) => {
       // Add current contents unless they are setting the registry
-      if (!line.toLowerCase().startsWith('registry')) {
+      if (!line.toLowerCase().startsWith(`${scope}registry`)) {
         newContents += line + os.EOL;
       }
     });
   }
   // Remove http: or https: from front of registry.
   const authString: string =
     registryUrl.replace(/(^\w+:|^)/, '') + ':_authToken=${NODE_AUTH_TOKEN}';
-  const registryString: string = scope
-    ? `${scope}:registry=${registryUrl}`
-    : `registry=${registryUrl}`;
+  const registryString: string = `${scope}registry=${registryUrl}`;
   const alwaysAuthString: string = `always-auth=${alwaysAuth}`;
   newContents += `${authString}${os.EOL}${registryString}${os.EOL}${alwaysAuthString}`;
   fs.writeFileSync(fileLocation, newContents);