diff --git a/__tests__/docker.test.ts b/__tests__/docker.test.ts
index 1ee1dfd..a0381a4 100644
--- a/__tests__/docker.test.ts
+++ b/__tests__/docker.test.ts
@@ -14,8 +14,10 @@
  * limitations under the License.
  */
 
-import {beforeEach, describe, expect, it, jest} from '@jest/globals';
+import {afterEach, beforeEach, describe, expect, it, jest} from '@jest/globals';
 import * as exec from '@actions/exec';
+import path from 'path';
+import osm = require('os');
 
 import {Docker} from '../src/docker';
 
@@ -23,10 +25,32 @@ beforeEach(() => {
   jest.clearAllMocks();
 });
 
+describe('configDir', () => {
+  const originalEnv = process.env;
+  beforeEach(() => {
+    jest.resetModules();
+    process.env = {
+      ...originalEnv,
+      DOCKER_CONFIG: '/var/docker/config'
+    };
+  });
+  afterEach(() => {
+    process.env = originalEnv;
+  });
+  it('returns default', async () => {
+    process.env.DOCKER_CONFIG = '';
+    jest.spyOn(osm, 'homedir').mockImplementation(() => path.join('/tmp', 'home'));
+    expect(Docker.configDir).toEqual(path.join('/tmp', 'home', '.docker'));
+  });
+  it('returns from env', async () => {
+    expect(Docker.configDir).toEqual('/var/docker/config');
+  });
+});
+
 describe('isAvailable', () => {
   it('cli', () => {
     const execSpy = jest.spyOn(exec, 'getExecOutput');
-    Docker.isAvailable();
+    Docker.isAvailable;
     // eslint-disable-next-line jest/no-standalone-expect
     expect(execSpy).toHaveBeenCalledWith(`docker`, undefined, {
       silent: true,
diff --git a/src/buildx/buildx.ts b/src/buildx/buildx.ts
index ed3fce2..a46cdf4 100644
--- a/src/buildx/buildx.ts
+++ b/src/buildx/buildx.ts
@@ -39,7 +39,7 @@ export class Buildx {
     this.context = opts.context;
     this.inputs = new Inputs(this.context);
     this.install = new Install({standalone: opts.standalone});
-    this.standalone = opts?.standalone ?? !Docker.isAvailable();
+    this.standalone = opts?.standalone ?? !Docker.isAvailable;
   }
 
   public getCommand(args: Array<string>) {
diff --git a/src/docker.ts b/src/docker.ts
index dca238d..2b86de7 100644
--- a/src/docker.ts
+++ b/src/docker.ts
@@ -14,10 +14,16 @@
  * limitations under the License.
  */
 
+import os from 'os';
+import path from 'path';
 import * as exec from '@actions/exec';
 
 export class Docker {
-  public static isAvailable(): boolean {
+  static get configDir(): string {
+    return process.env.DOCKER_CONFIG || path.join(os.homedir(), '.docker');
+  }
+
+  static get isAvailable(): boolean {
     let dockerAvailable = false;
     exec
       .getExecOutput('docker', undefined, {
@@ -39,7 +45,7 @@ export class Docker {
   }
 
   public static async printVersion(standalone?: boolean) {
-    const noDocker = standalone ?? !Docker.isAvailable();
+    const noDocker = standalone ?? !Docker.isAvailable;
     if (noDocker) {
       return;
     }
@@ -49,7 +55,7 @@ export class Docker {
   }
 
   public static async printInfo(standalone?: boolean) {
-    const noDocker = standalone ?? !Docker.isAvailable();
+    const noDocker = standalone ?? !Docker.isAvailable;
     if (noDocker) {
       return;
     }