fix current context as builder name for docker driver

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/workflows/ci.yml

@@ -464,3 +464,20 @@ jobs:
         uses: ./
         with:
           platforms: linux/amd64
+
+  docker-context:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Create Docker context
+        run: |
+          docker context create foo
+          docker context use foo
+      -
+        name: Set up Docker Buildx
+        uses: ./
+        with:
+          driver: docker

__tests__/context.test.ts

@@ -1,5 +1,6 @@
 import {beforeEach, describe, expect, jest, test} from '@jest/globals';
 import * as uuid from 'uuid';
+import {Docker} from '@docker/actions-toolkit/lib/docker';
 import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
 import {Node} from '@docker/actions-toolkit/lib/types/builder';
 
@@ -8,6 +9,10 @@ import * as context from '../src/context';
 jest.mock('uuid');
 jest.spyOn(uuid, 'v4').mockReturnValue('9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d');
 
+jest.spyOn(Docker, 'context').mockImplementation((): Promise<string> => {
+  return Promise.resolve('default');
+});
+
 describe('getCreateArgs', () => {
   beforeEach(() => {
     process.env = Object.keys(process.env).reduce((object, key) => {

package.json

@@ -29,7 +29,7 @@
   "dependencies": {
     "@actions/core": "^1.10.0",
     "@actions/exec": "^1.1.1",
-    "@docker/actions-toolkit": "^0.1.0-beta.15",
+    "@docker/actions-toolkit": "^0.1.0-beta.16",
     "js-yaml": "^4.1.0",
     "uuid": "^9.0.0"
   },

src/context.ts

@@ -1,5 +1,6 @@
 import * as uuid from 'uuid';
 import * as core from '@actions/core';
+import {Docker} from '@docker/actions-toolkit/lib/docker';
 import {Util} from '@docker/actions-toolkit/lib/util';
 import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
 import {Node} from '@docker/actions-toolkit/lib/types/builder';
@@ -24,7 +25,7 @@ export interface Inputs {
 export async function getInputs(): Promise<Inputs> {
   return {
     version: core.getInput('version'),
-    name: getBuilderName(core.getInput('driver') || 'docker-container'),
+    name: await getBuilderName(core.getInput('driver') || 'docker-container'),
     driver: core.getInput('driver') || 'docker-container',
     driverOpts: Util.getInputList('driver-opts', {ignoreComma: true, quote: false}),
     buildkitdFlags: core.getInput('buildkitd-flags') || '--allow-insecure-entitlement security.insecure --allow-insecure-entitlement network.host',
@@ -38,8 +39,8 @@ export async function getInputs(): Promise<Inputs> {
   };
 }
 
-export function getBuilderName(driver: string): string {
+export async function getBuilderName(driver: string): Promise<string> {
-  return driver == 'docker' ? 'default' : `builder-${uuid.v4()}`;
+  return driver == 'docker' ? await Docker.context() : `builder-${uuid.v4()}`;
 }
 
 export async function getCreateArgs(inputs: Inputs, toolkit: Toolkit): Promise<Array<string>> {

yarn.lock

@@ -563,10 +563,10 @@
   dependencies:
     "@cspotcode/source-map-consumer" "0.8.0"
 
-"@docker/actions-toolkit@^0.1.0-beta.15":
+"@docker/actions-toolkit@^0.1.0-beta.16":
-  version "0.1.0-beta.15"
+  version "0.1.0-beta.16"
-  resolved "https://registry.yarnpkg.com/@docker/actions-toolkit/-/actions-toolkit-0.1.0-beta.15.tgz#46d9f4b1582f19ce3cb68cf272fbee335e693212"
+  resolved "https://registry.yarnpkg.com/@docker/actions-toolkit/-/actions-toolkit-0.1.0-beta.16.tgz#a34915e2957872296c8d5334809e707e6628ed4e"
-  integrity sha512-YdOHXz+r1fkoYYA5tR+Ji6jiqw5wU7gYsL8ISW+mQicm6f4Ckw4PNNADEZR+X8paEc+96Xl5Osr2tKmM3mOZOA==
+  integrity sha512-uWdhvQdpinyC633C+3RjFXZdE5bVJoJ4ADWE3568ldEBARWxRfw04VGUa4+cQ8/UqPS5goXoTjU6c7ws0jn5RQ==
   dependencies:
     "@actions/core" "^1.10.0"
     "@actions/exec" "^1.1.1"