feat: exit if docker buildx can't be found for self-hosted builds

.changeset/spicy-turkeys-hug.md

@@ -0,0 +1,5 @@
+---
+"trigger.dev": minor
+---
+
+feat: exit if docker buildx can't be found for self-hosted builds

packages/cli-v3/package.json

@@ -118,7 +118,7 @@
     "std-env": "^3.7.0",
     "terminal-link": "^3.0.0",
     "tiny-invariant": "^1.2.0",
-    "tinyexec": "^0.2.0",
+    "tinyexec": "^0.3.1",
     "ws": "^8.18.0",
     "xdg-app-paths": "^8.3.0",
     "zod": "3.22.3",

packages/cli-v3/src/commands/deploy.ts

@@ -37,6 +37,7 @@ import { spinner } from "../utilities/windows.js";
 import { login } from "./login.js";
 import { updateTriggerPackages } from "./update.js";
 import { resolveAlwaysExternal } from "../build/externals.js";
+import { x } from "tinyexec";
 
 const DeployCommandOptions = CommonCommandOptions.extend({
   dryRun: z.boolean().default(false),
@@ -265,6 +266,17 @@ async function _deployCommand(dir: string, options: DeployCommandOptions) {
     );
   }
 
+  if (options.selfHosted) {
+    const result = await x("docker", ["buildx", "version"]);
+
+    if (result.exitCode !== 0) {
+      logger.debug(`"docker buildx version" failed (${result.exitCode}):`, result);
+      throw new Error(
+        "Failed to find docker buildx. Please install it: https://github.com/docker/buildx#installing."
+      );
+    }
+  }
+
   if (
     buildManifest.deploy.sync &&
     buildManifest.deploy.sync.env &&