diff --git a/docker/Dockerfile b/docker/Dockerfile
index 9baaff0..3781649 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,7 +1,7 @@
 FROM ubuntu:18.04
 
 RUN apt-get update \
-  && DEBIAN_FRONTEND=noninteractive apt-get install -y nodejs npm git rsync m4 curl \
+  && DEBIAN_FRONTEND=noninteractive apt-get install -y nodejs npm git rsync m4 curl zip \
   && rm -rf /var/lib/apt/lists/*
 
 RUN npm i -g esy@0.5.6
diff --git a/scripts/createZip.js b/scripts/createZip.js
index d00b436..95390fb 100644
--- a/scripts/createZip.js
+++ b/scripts/createZip.js
@@ -13,6 +13,12 @@ const zipName = `${exeName}-${version}-${platform}.zip`;
 if (fs.existsSync(zipName)) {
   fs.unlinkSync(zipName);
 }
-fs.copyFileSync("_build/default/bin/Extract.exe", exeName);
+
+const builtExePath = child_process
+  .execSync(`esy x which Extract.exe`)
+  .toString()
+  .trim();
+
+fs.copyFileSync(builtExePath, exeName);
 child_process.execSync(`zip ${zipName} ${exeName}`);
 fs.unlinkSync(exeName);