vscode: Use options.base for update checking

See #2358 (comment)

Author: nhooyr

ci/dev/vscode.patch

@@ -769,10 +769,10 @@ index 096b9e23493539c9937940a56e555d95bbae38d9..ef37e614004f550f7b64eacd362f6894
  	remove(key: string, scope: StorageScope): void {
 diff --git a/src/vs/server/browser/client.ts b/src/vs/server/browser/client.ts
 new file mode 100644
-index 0000000000000000000000000000000000000000..385b9da491d38a9f5d10fab6e4666c84a892f49d
+index 0000000000000000000000000000000000000000..71df1d2b0a718c6a6fbb66a075be52d1be3ff00d
 --- /dev/null
 +++ b/src/vs/server/browser/client.ts
-@@ -0,0 +1,240 @@
+@@ -0,0 +1,239 @@
 +import { Emitter } from 'vs/base/common/event';
 +import { URI } from 'vs/base/common/uri';
 +import { localize } from 'vs/nls';
@@ -926,8 +926,7 @@ index 0000000000000000000000000000000000000000..385b9da491d38a9f5d10fab6e4666c84
 +
 +	const logService = (services.get(ILogService) as ILogService);
 +	const storageService = (services.get(IStorageService) as IStorageService);
-+	// We set this here first in case the path changes.
-+	const updateCheckEndpoint = path.join(window.location.pathname, "/update/check")
++	const updateCheckEndpoint = path.join(options.base, "/update/check")
 +	const getUpdate = async (): Promise<void> => {
 +		logService.debug("Checking for update...");
 +
@@ -1405,16 +1404,17 @@ index 0000000000000000000000000000000000000000..56331ff1fc32bbd82e769aaecb551e42
 +require('../../bootstrap-amd').load('vs/server/entry');
 diff --git a/src/vs/server/ipc.d.ts b/src/vs/server/ipc.d.ts
 new file mode 100644
-index 0000000000000000000000000000000000000000..6ce56bec114a6d8daf5dd3ded945ea78fc72a5c6
+index 0000000000000000000000000000000000000000..fd0115a74eb2d7362a3bf2543cb354a29a58936a
 --- /dev/null
 +++ b/src/vs/server/ipc.d.ts
-@@ -0,0 +1,131 @@
+@@ -0,0 +1,132 @@
 +/**
 + * External interfaces for integration into code-server over IPC. No vs imports
 + * should be made in this file.
 + */
 +export interface Options {
 +	disableTelemetry: boolean
++	base: string
 +}
 +
 +export interface InitMessage {