From f9785cc83a500b37caf20b01f39e3c64630f8a0e Mon Sep 17 00:00:00 2001
From: Jess Bowers <jbow912@me.com>
Date: Tue, 9 Feb 2021 19:49:07 -0500
Subject: [PATCH] Handle docker pull errors

---
 src/docker.ts | 34 +++++++++++++++++++---------------
 1 file changed, 19 insertions(+), 15 deletions(-)

diff --git a/src/docker.ts b/src/docker.ts
index 2b2b094..79fa0f8 100644
--- a/src/docker.ts
+++ b/src/docker.ts
@@ -31,22 +31,26 @@ export function demux(
 }
 
 export function pull(docker: Dockerode, image: string): Promise<void> {
-  return new Promise(resolve => {
+  return new Promise((resolve, reject) => {
     docker.pull(image, {}, (err, stream) => {
-      docker.modem.followProgress(
-        stream,
-        () => {
-          process.stdout.write('\n');
-          resolve();
-        },
-        function(event: any) {
-          readline.clearLine(process.stdout, 0);
-          readline.cursorTo(process.stdout, 0);
-          process.stdout.write(
-            `${event.status} ${event.id || ''} ${event.progress || ''}`
-          );
-        }
-      );
+      if (stream) {
+        docker.modem.followProgress(
+          stream,
+          () => {
+            process.stdout.write('\n');
+            resolve();
+          },
+          function (event: any) {
+            readline.clearLine(process.stdout, 0);
+            readline.cursorTo(process.stdout, 0);
+            process.stdout.write(
+              `${event.status} ${event.id || ''} ${event.progress || ''}`
+            );
+          }
+        );
+      } else {
+        reject(new Error(`Docker pull failed: ${err}`));
+      }
     });
   });
 }