diff --git a/server/container-baby.ts b/server/container-baby.ts
index ff7a846..24e30c9 100644
--- a/server/container-baby.ts
+++ b/server/container-baby.ts
@@ -10,7 +10,7 @@ type RegistrySecret = string;
 const getToken = memoizeDownloader(_getToken);
 let squashfsDownloads = new Map<string, Promise<string>>();
 
-const tmpDir = "cache/";
+const cacheDir = "cache/";
 // {
 //   const image = "gitea.nulo.in/nulo/zulip-checkin-cyborg";
 //   const tag = "latest";
@@ -27,7 +27,7 @@ export function parseImageRef(ref: string): { image: string; tag: string } {
 }
 
 export async function downloadImage(image: string, tag: string) {
-  await mkdir(tmpDir, { recursive: true });
+  await mkdir(cacheDir, { recursive: true });
   const manifest = await getManifest(image, tag);
 
   // sanity check
@@ -75,7 +75,7 @@ async function saveSquashfs(
   let p = squashfsDownloads.get(key);
   if (!p) {
     p = (async () => {
-      const output = join(tmpDir, key);
+      const output = join(cacheDir, key);
       try {
         await access(output);
         // ya está cacheado