Don't set up nsc-remote if in-runner-builder is present

common.ts

@@ -1,3 +1,4 @@
 export const nscRemoteBuilderName = "nsc-remote";
+export const nscInRunnerBuilderName = "in-runner-builder"
 export const nscDebugFolder = "/home/runner/nsc";
 export const nscVmIdKey = 'NSC_VM_ID';

main.ts

@@ -1,7 +1,7 @@
 import * as core from "@actions/core";
 import * as exec from "@actions/exec";
 import * as fs from "node:fs";
-import { nscRemoteBuilderName, nscDebugFolder, nscVmIdKey } from "./common";
+import { nscRemoteBuilderName, nscDebugFolder, nscVmIdKey, nscInRunnerBuilderName } from "./common";
 
 async function run(): Promise<void> {
   const commandExists = require("command-exists");
@@ -22,13 +22,22 @@ async function prepareBuildx(): Promise<void> {
     const exists = await core.group(
       "Check if Namespace Builder proxy is already configured",
       async (): Promise<boolean> => {
-        const builderExists = await remoteNscBuilderExists();
-        if (builderExists) {
+        const remoteBuilderExists = await nscBuilderExists(nscRemoteBuilderName);
+        if (remoteBuilderExists) {
           core.info(
             "GitHub runner is already configured to use Namespace Cloud build cluster."
           );
           return true;
         }
+
+        const inRunnerBuilderExists = await nscBuilderExists(nscInRunnerBuilderName);
+        if (inRunnerBuilderExists) {
+          core.info(
+            "GitHub runner is already configured to use Namespace Locally cached builder."
+          );
+          return true;
+        }
+
         core.info("Namespace Builder is not yet configured.");
         return false;
       }
@@ -90,13 +99,13 @@ async function ensureNscloudToken() {
   await exec.exec("nsc auth exchange-github-token --ensure=5m");
 }
 
-async function remoteNscBuilderExists(): Promise<boolean> {
+async function nscBuilderExists(builderName: string): Promise<boolean> {
   const { stdout, stderr } = await exec.getExecOutput(
-    `docker buildx inspect ${nscRemoteBuilderName}`,
+    `docker buildx inspect ${builderName}`,
     null,
     { ignoreReturnCode: true, silent: true }
   );
-  const builderNotFoundStr = `no builder "${nscRemoteBuilderName}" found`;
+  const builderNotFoundStr = `no builder "$builderName}" found`;
   return !(
     stdout.includes(builderNotFoundStr) || stderr.includes(builderNotFoundStr)
   );