diff --git a/__tests__/setup.unit.ts b/__tests__/setup.unit.ts
index 73b5629..195937a 100644
--- a/__tests__/setup.unit.ts
+++ b/__tests__/setup.unit.ts
@@ -1,259 +1,252 @@
 import fs from 'node:fs';
-import {createRequire} from 'node:module';
 import os from 'node:os';
 import path from 'node:path';
 import {vi} from 'vitest';
 
 const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'docker-metadata-action-'));
 
+const githubPayload = {
+  after: '860c1904a1ce19322e91ac35af1ab07466440c37',
+  base_ref: null,
+  before: '5f3331d7f7044c18ca9f12c77d961c4d7cf3276a',
+  commits: [
+    {
+      author: {
+        email: 'crazy-max@users.noreply.github.com',
+        name: 'CrazyMax',
+        username: 'crazy-max'
+      },
+      committer: {
+        email: 'crazy-max@users.noreply.github.com',
+        name: 'CrazyMax',
+        username: 'crazy-max'
+      },
+      distinct: true,
+      id: '5f3331d7f7044c18ca9f12c77d961c4d7cf3276a',
+      message: 'hello dev',
+      timestamp: '2024-11-13T13:42:28Z',
+      tree_id: 'd2c60af597e863787d2d27f569e30495b0b92820',
+      url: 'https://github.com/docker/test-docker-action/commit/5f3331d7f7044c18ca9f12c77d961c4d7cf3276a'
+    }
+  ],
+  compare: 'https://github.com/docker/test-docker-action/compare/5f3331d7f704...860c1904a1ce',
+  created: false,
+  deleted: false,
+  forced: false,
+  head_commit: {
+    author: {
+      email: 'crazy-max@users.noreply.github.com',
+      name: 'CrazyMax',
+      username: 'crazy-max'
+    },
+    committer: {
+      email: 'crazy-max@users.noreply.github.com',
+      name: 'CrazyMax',
+      username: 'crazy-max'
+    },
+    distinct: true,
+    id: '5f3331d7f7044c18ca9f12c77d961c4d7cf3276a',
+    message: 'hello dev',
+    timestamp: '2024-11-13T13:42:28Z',
+    tree_id: 'd2c60af597e863787d2d27f569e30495b0b92820',
+    url: 'https://github.com/docker/test-docker-action/commit/5f3331d7f7044c18ca9f12c77d961c4d7cf3276a'
+  },
+  organization: {
+    avatar_url: 'https://avatars.githubusercontent.com/u/5429470?v=4',
+    description: 'Docker helps developers bring their ideas to life by conquering the complexity of app development.',
+    events_url: 'https://api.github.com/orgs/docker/events',
+    hooks_url: 'https://api.github.com/orgs/docker/hooks',
+    id: 5429470,
+    issues_url: 'https://api.github.com/orgs/docker/issues',
+    login: 'docker',
+    members_url: 'https://api.github.com/orgs/docker/members{/member}',
+    node_id: 'MDEyOk9yZ2FuaXphdGlvbjU0Mjk0NzA=',
+    public_members_url: 'https://api.github.com/orgs/docker/public_members{/member}',
+    repos_url: 'https://api.github.com/orgs/docker/repos',
+    url: 'https://api.github.com/orgs/docker'
+  },
+  pusher: {
+    email: 'github@crazymax.dev',
+    name: 'crazy-max'
+  },
+  ref: 'refs/heads/dev',
+  repository: {
+    allow_forking: true,
+    archive_url: 'https://api.github.com/repos/docker/test-docker-action/{archive_format}{/ref}',
+    archived: false,
+    assignees_url: 'https://api.github.com/repos/docker/test-docker-action/assignees{/user}',
+    blobs_url: 'https://api.github.com/repos/docker/test-docker-action/git/blobs{/sha}',
+    branches_url: 'https://api.github.com/repos/docker/test-docker-action/branches{/branch}',
+    clone_url: 'https://github.com/docker/test-docker-action.git',
+    collaborators_url: 'https://api.github.com/repos/docker/test-docker-action/collaborators{/collaborator}',
+    comments_url: 'https://api.github.com/repos/docker/test-docker-action/comments{/number}',
+    commits_url: 'https://api.github.com/repos/docker/test-docker-action/commits{/sha}',
+    compare_url: 'https://api.github.com/repos/docker/test-docker-action/compare/{base}...{head}',
+    contents_url: 'https://api.github.com/repos/docker/test-docker-action/contents/{+path}',
+    contributors_url: 'https://api.github.com/repos/docker/test-docker-action/contributors',
+    created_at: 1596792180,
+    default_branch: 'master',
+    deployments_url: 'https://api.github.com/repos/docker/test-docker-action/deployments',
+    description: 'Test "Docker" Actions',
+    disabled: false,
+    downloads_url: 'https://api.github.com/repos/docker/test-docker-action/downloads',
+    events_url: 'https://api.github.com/repos/docker/test-docker-action/events',
+    fork: false,
+    forks: 1,
+    forks_count: 1,
+    forks_url: 'https://api.github.com/repos/docker/test-docker-action/forks',
+    full_name: 'docker/test-docker-action',
+    git_commits_url: 'https://api.github.com/repos/docker/test-docker-action/git/commits{/sha}',
+    git_refs_url: 'https://api.github.com/repos/docker/test-docker-action/git/refs{/sha}',
+    git_tags_url: 'https://api.github.com/repos/docker/test-docker-action/git/tags{/sha}',
+    git_url: 'git://github.com/docker/test-docker-action.git',
+    has_downloads: true,
+    has_issues: true,
+    has_pages: false,
+    has_projects: true,
+    has_wiki: true,
+    homepage: '',
+    hooks_url: 'https://api.github.com/repos/docker/test-docker-action/hooks',
+    html_url: 'https://github.com/docker/test-docker-action',
+    id: 285789493,
+    is_template: false,
+    issue_comment_url: 'https://api.github.com/repos/docker/test-docker-action/issues/comments{/number}',
+    issue_events_url: 'https://api.github.com/repos/docker/test-docker-action/issues/events{/number}',
+    issues_url: 'https://api.github.com/repos/docker/test-docker-action/issues{/number}',
+    keys_url: 'https://api.github.com/repos/docker/test-docker-action/keys{/key_id}',
+    labels_url: 'https://api.github.com/repos/docker/test-docker-action/labels{/name}',
+    language: 'JavaScript',
+    languages_url: 'https://api.github.com/repos/docker/test-docker-action/languages',
+    license: {
+      key: 'mit',
+      name: 'MIT License',
+      node_id: 'MDc6TGljZW5zZTEz',
+      spdx_id: 'MIT',
+      url: 'https://api.github.com/licenses/mit'
+    },
+    master_branch: 'master',
+    merges_url: 'https://api.github.com/repos/docker/test-docker-action/merges',
+    milestones_url: 'https://api.github.com/repos/docker/test-docker-action/milestones{/number}',
+    mirror_url: null,
+    name: 'test-docker-action',
+    node_id: 'MDEwOlJlcG9zaXRvcnkyODU3ODk0OTM=',
+    notifications_url: 'https://api.github.com/repos/docker/test-docker-action/notifications{?since,all,participating}',
+    open_issues: 6,
+    open_issues_count: 6,
+    organization: 'docker',
+    owner: {
+      avatar_url: 'https://avatars.githubusercontent.com/u/5429470?v=4',
+      email: 'info@docker.com',
+      events_url: 'https://api.github.com/users/docker/events{/privacy}',
+      followers_url: 'https://api.github.com/users/docker/followers',
+      following_url: 'https://api.github.com/users/docker/following{/other_user}',
+      gists_url: 'https://api.github.com/users/docker/gists{/gist_id}',
+      gravatar_id: '',
+      html_url: 'https://github.com/docker',
+      id: 5429470,
+      login: 'docker',
+      name: 'docker',
+      node_id: 'MDEyOk9yZ2FuaXphdGlvbjU0Mjk0NzA=',
+      organizations_url: 'https://api.github.com/users/docker/orgs',
+      received_events_url: 'https://api.github.com/users/docker/received_events',
+      repos_url: 'https://api.github.com/users/docker/repos',
+      site_admin: false,
+      starred_url: 'https://api.github.com/users/docker/starred{/owner}{/repo}',
+      subscriptions_url: 'https://api.github.com/users/docker/subscriptions',
+      type: 'Organization',
+      url: 'https://api.github.com/users/docker'
+    },
+    private: true,
+    pulls_url: 'https://api.github.com/repos/docker/test-docker-action/pulls{/number}',
+    pushed_at: 1650360446,
+    releases_url: 'https://api.github.com/repos/docker/test-docker-action/releases{/id}',
+    size: 796,
+    ssh_url: 'git@github.com:docker/test-docker-action.git',
+    stargazers: 0,
+    stargazers_count: 0,
+    stargazers_url: 'https://api.github.com/repos/docker/test-docker-action/stargazers',
+    statuses_url: 'https://api.github.com/repos/docker/test-docker-action/statuses/{sha}',
+    subscribers_url: 'https://api.github.com/repos/docker/test-docker-action/subscribers',
+    subscription_url: 'https://api.github.com/repos/docker/test-docker-action/subscription',
+    svn_url: 'https://github.com/docker/test-docker-action',
+    tags_url: 'https://api.github.com/repos/docker/test-docker-action/tags',
+    teams_url: 'https://api.github.com/repos/docker/test-docker-action/teams',
+    topics: [],
+    trees_url: 'https://api.github.com/repos/docker/test-docker-action/git/trees{/sha}',
+    updated_at: '2022-04-19T09:05:09Z',
+    url: 'https://github.com/docker/test-docker-action',
+    visibility: 'private',
+    watchers: 0,
+    watchers_count: 0
+  },
+  sender: {
+    avatar_url: 'https://avatars.githubusercontent.com/u/1951866?v=4',
+    events_url: 'https://api.github.com/users/crazy-max/events{/privacy}',
+    followers_url: 'https://api.github.com/users/crazy-max/followers',
+    following_url: 'https://api.github.com/users/crazy-max/following{/other_user}',
+    gists_url: 'https://api.github.com/users/crazy-max/gists{/gist_id}',
+    gravatar_id: '',
+    html_url: 'https://github.com/crazy-max',
+    id: 1951866,
+    login: 'crazy-max',
+    node_id: 'MDQ6VXNlcjE5NTE4NjY=',
+    organizations_url: 'https://api.github.com/users/crazy-max/orgs',
+    received_events_url: 'https://api.github.com/users/crazy-max/received_events',
+    repos_url: 'https://api.github.com/users/crazy-max/repos',
+    site_admin: false,
+    starred_url: 'https://api.github.com/users/crazy-max/starred{/owner}{/repo}',
+    subscriptions_url: 'https://api.github.com/users/crazy-max/subscriptions',
+    type: 'User',
+    url: 'https://api.github.com/users/crazy-max'
+  }
+};
+
+const githubEventPath = path.join(tmpDir, 'github-event.json');
+fs.writeFileSync(githubEventPath, JSON.stringify(githubPayload));
+
 process.env = Object.assign({}, process.env, {
   TEMP: tmpDir,
   GITHUB_REPOSITORY: 'docker/metadata-action',
+  GITHUB_REF: 'refs/heads/dev',
+  GITHUB_RUN_ID: '2188748038',
+  GITHUB_RUN_ATTEMPT: '1',
+  GITHUB_RUN_NUMBER: '15',
+  GITHUB_SHA: '5f3331d7f7044c18ca9f12c77d961c4d7cf3276a',
+  GITHUB_EVENT_PATH: githubEventPath,
   RUNNER_TEMP: path.join(tmpDir, 'runner-temp'),
   RUNNER_TOOL_CACHE: path.join(tmpDir, 'runner-tool-cache')
 });
 
-const require = createRequire(import.meta.url);
-type RequireCacheEntry = NonNullable<(typeof require.cache)[string]>;
-
-const githubMock = {
-  context: {
-    repo: {
-      owner: 'docker',
-      repo: 'actions-toolkit'
-    },
-    ref: 'refs/heads/dev',
-    sha: '5f3331d7f7044c18ca9f12c77d961c4d7cf3276a',
-    runId: 2188748038,
-    runNumber: 15,
-    payload: {
-      after: '860c1904a1ce19322e91ac35af1ab07466440c37',
-      base_ref: null,
-      before: '5f3331d7f7044c18ca9f12c77d961c4d7cf3276a',
-      commits: [
-        {
-          author: {
-            email: 'crazy-max@users.noreply.github.com',
-            name: 'CrazyMax',
-            username: 'crazy-max'
-          },
-          committer: {
-            email: 'crazy-max@users.noreply.github.com',
-            name: 'CrazyMax',
-            username: 'crazy-max'
-          },
-          distinct: true,
-          id: '860c1904a1ce19322e91ac35af1ab07466440c37',
-          message: 'hello dev',
-          timestamp: '2022-04-19T11:27:24+02:00',
-          tree_id: 'd2c60af597e863787d2d27f569e30495b0b92820',
-          url: 'https://github.com/docker/test-docker-action/commit/860c1904a1ce19322e91ac35af1ab07466440c37'
-        }
-      ],
-      compare: 'https://github.com/docker/test-docker-action/compare/5f3331d7f704...860c1904a1ce',
-      created: false,
-      deleted: false,
-      forced: false,
-      head_commit: {
-        author: {
-          email: 'crazy-max@users.noreply.github.com',
-          name: 'CrazyMax',
-          username: 'crazy-max'
-        },
+const getCommitMock = vi.hoisted(() =>
+  vi.fn(async () => ({
+    data: {
+      commit: {
         committer: {
-          email: 'crazy-max@users.noreply.github.com',
-          name: 'CrazyMax',
-          username: 'crazy-max'
-        },
-        distinct: true,
-        id: '860c1904a1ce19322e91ac35af1ab07466440c37',
-        message: 'hello dev',
-        timestamp: '2022-04-19T11:27:24+02:00',
-        tree_id: 'd2c60af597e863787d2d27f569e30495b0b92820',
-        url: 'https://github.com/docker/test-docker-action/commit/860c1904a1ce19322e91ac35af1ab07466440c37'
-      },
-      organization: {
-        avatar_url: 'https://avatars.githubusercontent.com/u/5429470?v=4',
-        description: 'Docker helps developers bring their ideas to life by conquering the complexity of app development.',
-        events_url: 'https://api.github.com/orgs/docker/events',
-        hooks_url: 'https://api.github.com/orgs/docker/hooks',
-        id: 5429470,
-        issues_url: 'https://api.github.com/orgs/docker/issues',
-        login: 'docker',
-        members_url: 'https://api.github.com/orgs/docker/members{/member}',
-        node_id: 'MDEyOk9yZ2FuaXphdGlvbjU0Mjk0NzA=',
-        public_members_url: 'https://api.github.com/orgs/docker/public_members{/member}',
-        repos_url: 'https://api.github.com/orgs/docker/repos',
-        url: 'https://api.github.com/orgs/docker'
-      },
-      pusher: {
-        email: 'github@crazymax.dev',
-        name: 'crazy-max'
-      },
-      ref: 'refs/heads/dev',
-      repository: {
-        allow_forking: true,
-        archive_url: 'https://api.github.com/repos/docker/test-docker-action/{archive_format}{/ref}',
-        archived: false,
-        assignees_url: 'https://api.github.com/repos/docker/test-docker-action/assignees{/user}',
-        blobs_url: 'https://api.github.com/repos/docker/test-docker-action/git/blobs{/sha}',
-        branches_url: 'https://api.github.com/repos/docker/test-docker-action/branches{/branch}',
-        clone_url: 'https://github.com/docker/test-docker-action.git',
-        collaborators_url: 'https://api.github.com/repos/docker/test-docker-action/collaborators{/collaborator}',
-        comments_url: 'https://api.github.com/repos/docker/test-docker-action/comments{/number}',
-        commits_url: 'https://api.github.com/repos/docker/test-docker-action/commits{/sha}',
-        compare_url: 'https://api.github.com/repos/docker/test-docker-action/compare/{base}...{head}',
-        contents_url: 'https://api.github.com/repos/docker/test-docker-action/contents/{+path}',
-        contributors_url: 'https://api.github.com/repos/docker/test-docker-action/contributors',
-        created_at: 1596792180,
-        default_branch: 'master',
-        deployments_url: 'https://api.github.com/repos/docker/test-docker-action/deployments',
-        description: 'Test "Docker" Actions',
-        disabled: false,
-        downloads_url: 'https://api.github.com/repos/docker/test-docker-action/downloads',
-        events_url: 'https://api.github.com/repos/docker/test-docker-action/events',
-        fork: false,
-        forks: 1,
-        forks_count: 1,
-        forks_url: 'https://api.github.com/repos/docker/test-docker-action/forks',
-        full_name: 'docker/test-docker-action',
-        git_commits_url: 'https://api.github.com/repos/docker/test-docker-action/git/commits{/sha}',
-        git_refs_url: 'https://api.github.com/repos/docker/test-docker-action/git/refs{/sha}',
-        git_tags_url: 'https://api.github.com/repos/docker/test-docker-action/git/tags{/sha}',
-        git_url: 'git://github.com/docker/test-docker-action.git',
-        has_downloads: true,
-        has_issues: true,
-        has_pages: false,
-        has_projects: true,
-        has_wiki: true,
-        homepage: '',
-        hooks_url: 'https://api.github.com/repos/docker/test-docker-action/hooks',
-        html_url: 'https://github.com/docker/test-docker-action',
-        id: 285789493,
-        is_template: false,
-        issue_comment_url: 'https://api.github.com/repos/docker/test-docker-action/issues/comments{/number}',
-        issue_events_url: 'https://api.github.com/repos/docker/test-docker-action/issues/events{/number}',
-        issues_url: 'https://api.github.com/repos/docker/test-docker-action/issues{/number}',
-        keys_url: 'https://api.github.com/repos/docker/test-docker-action/keys{/key_id}',
-        labels_url: 'https://api.github.com/repos/docker/test-docker-action/labels{/name}',
-        language: 'JavaScript',
-        languages_url: 'https://api.github.com/repos/docker/test-docker-action/languages',
-        license: {
-          key: 'mit',
-          name: 'MIT License',
-          node_id: 'MDc6TGljZW5zZTEz',
-          spdx_id: 'MIT',
-          url: 'https://api.github.com/licenses/mit'
-        },
-        master_branch: 'master',
-        merges_url: 'https://api.github.com/repos/docker/test-docker-action/merges',
-        milestones_url: 'https://api.github.com/repos/docker/test-docker-action/milestones{/number}',
-        mirror_url: null,
-        name: 'test-docker-action',
-        node_id: 'MDEwOlJlcG9zaXRvcnkyODU3ODk0OTM=',
-        notifications_url: 'https://api.github.com/repos/docker/test-docker-action/notifications{?since,all,participating}',
-        open_issues: 6,
-        open_issues_count: 6,
-        organization: 'docker',
-        owner: {
-          avatar_url: 'https://avatars.githubusercontent.com/u/5429470?v=4',
-          email: 'info@docker.com',
-          events_url: 'https://api.github.com/users/docker/events{/privacy}',
-          followers_url: 'https://api.github.com/users/docker/followers',
-          following_url: 'https://api.github.com/users/docker/following{/other_user}',
-          gists_url: 'https://api.github.com/users/docker/gists{/gist_id}',
-          gravatar_id: '',
-          html_url: 'https://github.com/docker',
-          id: 5429470,
-          login: 'docker',
-          name: 'docker',
-          node_id: 'MDEyOk9yZ2FuaXphdGlvbjU0Mjk0NzA=',
-          organizations_url: 'https://api.github.com/users/docker/orgs',
-          received_events_url: 'https://api.github.com/users/docker/received_events',
-          repos_url: 'https://api.github.com/users/docker/repos',
-          site_admin: false,
-          starred_url: 'https://api.github.com/users/docker/starred{/owner}{/repo}',
-          subscriptions_url: 'https://api.github.com/users/docker/subscriptions',
-          type: 'Organization',
-          url: 'https://api.github.com/users/docker'
-        },
-        private: true,
-        pulls_url: 'https://api.github.com/repos/docker/test-docker-action/pulls{/number}',
-        pushed_at: 1650360446,
-        releases_url: 'https://api.github.com/repos/docker/test-docker-action/releases{/id}',
-        size: 796,
-        ssh_url: 'git@github.com:docker/test-docker-action.git',
-        stargazers: 0,
-        stargazers_count: 0,
-        stargazers_url: 'https://api.github.com/repos/docker/test-docker-action/stargazers',
-        statuses_url: 'https://api.github.com/repos/docker/test-docker-action/statuses/{sha}',
-        subscribers_url: 'https://api.github.com/repos/docker/test-docker-action/subscribers',
-        subscription_url: 'https://api.github.com/repos/docker/test-docker-action/subscription',
-        svn_url: 'https://github.com/docker/test-docker-action',
-        tags_url: 'https://api.github.com/repos/docker/test-docker-action/tags',
-        teams_url: 'https://api.github.com/repos/docker/test-docker-action/teams',
-        topics: [],
-        trees_url: 'https://api.github.com/repos/docker/test-docker-action/git/trees{/sha}',
-        updated_at: '2022-04-19T09:05:09Z',
-        url: 'https://github.com/docker/test-docker-action',
-        visibility: 'private',
-        watchers: 0,
-        watchers_count: 0
-      },
-      sender: {
-        avatar_url: 'https://avatars.githubusercontent.com/u/1951866?v=4',
-        events_url: 'https://api.github.com/users/crazy-max/events{/privacy}',
-        followers_url: 'https://api.github.com/users/crazy-max/followers',
-        following_url: 'https://api.github.com/users/crazy-max/following{/other_user}',
-        gists_url: 'https://api.github.com/users/crazy-max/gists{/gist_id}',
-        gravatar_id: '',
-        html_url: 'https://github.com/crazy-max',
-        id: 1951866,
-        login: 'crazy-max',
-        node_id: 'MDQ6VXNlcjE5NTE4NjY=',
-        organizations_url: 'https://api.github.com/users/crazy-max/orgs',
-        received_events_url: 'https://api.github.com/users/crazy-max/received_events',
-        repos_url: 'https://api.github.com/users/crazy-max/repos',
-        site_admin: false,
-        starred_url: 'https://api.github.com/users/crazy-max/starred{/owner}{/repo}',
-        subscriptions_url: 'https://api.github.com/users/crazy-max/subscriptions',
-        type: 'User',
-        url: 'https://api.github.com/users/crazy-max'
+          date: '2024-11-13T13:42:28Z'
+        }
       }
     }
-  },
-  getOctokit: () => ({
+  }))
+);
+
+const getOctokitMock = vi.hoisted(() =>
+  vi.fn(() => ({
     rest: {
       repos: {
-        getCommit: async () => ({
-          data: {
-            commit: {
-              committer: {
-                date: '2024-11-13T13:42:28Z'
-              }
-            }
-          }
-        })
+        getCommit: getCommitMock
       }
     }
-  })
-};
+  }))
+);
 
-vi.mock('@actions/github', () => githubMock);
-
-for (const mod of ['@actions/github', '@docker/actions-toolkit/node_modules/@actions/github']) {
-  try {
-    const resolved = require.resolve(mod);
-    vi.doMock(resolved, () => githubMock);
-    require.cache[resolved] = {
-      id: resolved,
-      filename: resolved,
-      loaded: true,
-      exports: githubMock,
-      children: [],
-      paths: []
-    } as RequireCacheEntry;
-  } catch {
-    // Ignore unresolved optional paths; vi.mock handles module-level mocking.
-  }
-}
+vi.mock('@actions/github', async importOriginal => {
+  const actual = await importOriginal<typeof import('@actions/github')>();
+  return {
+    ...actual,
+    context: {
+      ...actual.context,
+      payload: githubPayload
+    },
+    getOctokit: getOctokitMock
+  };
+});