feat: add variable commit_date

Signed-off-by: Trim21 <trim21.me@gmail.com>

README.md

@@ -889,6 +889,19 @@ Default `tz` is UTC.
 | `{{date 'dddd, MMMM Do YYYY, h:mm:ss a'}}`   | `Friday, January 10th 2020, 3:25:50 pm` |
 | `{{date 'YYYYMMDD-HHmmss' tz='Asia/Tokyo'}}` | `20200110-093000`                       |
 
+#### `{{commit_date '<format>' tz='<timezone>'}}`
+
+Returns the date when current git commit is committed.
+rendered by its [moment format](https://momentjs.com/docs/#/displaying/format/).
+
+Default `tz` is UTC.
+
+| Expression                                   | Output example                          |
+|----------------------------------------------|-----------------------------------------|
+| `{{commit_date 'YYYYMMDD'}}`                        | `20200110`                              |
+| `{{commit_date 'dddd, MMMM Do YYYY, h:mm:ss a'}}`   | `Friday, January 10th 2020, 3:25:50 pm` |
+| `{{commit_date 'YYYYMMDD-HHmmss' tz='Asia/Tokyo'}}` | `20200110-093000`                       |
+
 ### Major version zero
 
 Major version zero (`0.y.z`) is for initial development and **may** change at

__mocks__/@actions/github.ts

@@ -204,4 +204,6 @@ export const context = {
   }
 };
 
-export const getOctokit = jest.fn();
+export const getOctokit = jest.fn(() => ({
+  request: () => Promise.resolve({data: {committer: {date: '2024-11-13T13:42:28Z'}}})
+}));

__tests__/context.test.ts

@@ -7,6 +7,9 @@ import {Git} from '@docker/actions-toolkit/lib/git';
 import {GitHub} from '@docker/actions-toolkit/lib/github';
 
 import {ContextSource, getContext, getInputs, Inputs} from '../src/context';
+import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
+
+const toolkit = new Toolkit({githubToken: 'fake-github-token'});
 
 beforeEach(() => {
   jest.clearAllMocks();
@@ -113,9 +116,10 @@ describe('getContext', () => {
   });
 
   it('workflow', async () => {
-    const context = await getContext(ContextSource.workflow);
+    const context = await getContext(ContextSource.workflow, toolkit);
     expect(context.ref).toEqual('refs/heads/dev');
     expect(context.sha).toEqual('5f3331d7f7044c18ca9f12c77d961c4d7cf3276a');
+    expect(context.commitDate).toEqual(new Date('2024-11-13T13:42:28.000Z'));
   });
 
   it('git', async () => {
@@ -125,9 +129,13 @@ describe('getContext', () => {
         sha: 'git-test-sha'
       } as Context);
     });
-    const context = await getContext(ContextSource.git);
+    jest.spyOn(Git, 'commitDate').mockImplementation(async (): Promise<Date> => {
+      return new Date('2023-01-01T13:42:28.000Z');
+    });
+    const context = await getContext(ContextSource.git, toolkit);
     expect(context.ref).toEqual('refs/heads/git-test');
     expect(context.sha).toEqual('git-test-sha');
+    expect(context.commitDate).toEqual(new Date('2023-01-01T13:42:28.000Z'));
   });
 });
 

__tests__/meta.test.ts

@@ -31,8 +31,16 @@ beforeEach(() => {
       delete process.env[key];
     }
   });
+
   jest.spyOn(GitHub, 'context', 'get').mockImplementation((): Context => {
-    return new Context();
+    //@ts-expect-error partial info
+    return {
+      ...new Context(),
+      repo: {
+        owner: 'docker',
+        repo: 'repo'
+      }
+    };
   });
 });
 
@@ -53,7 +61,7 @@ const tagsLabelsTest = async (name: string, envFile: string, inputs: Inputs, exV
   process.env = dotenv.parse(fs.readFileSync(path.join(__dirname, 'fixtures', envFile)));
   const toolkit = new Toolkit();
   const repo = await toolkit.github.repoData();
-  const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow), repo);
+  const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow, toolkit), repo);
 
   const version = meta.version;
   expect(version).toEqual(exVersion);
@@ -622,6 +630,7 @@ describe('push', () => {
         tags: [
           `type=raw,value=mytag-{{branch}}`,
           `type=raw,value=mytag-{{date 'YYYYMMDD'}}`,
+          `type=raw,value=mytag-cd-{{commit_date 'YYYYMMDD'}}`,
           `type=raw,value=mytag-{{date 'YYYYMMDD-HHmmss' tz='Asia/Tokyo'}}`,
           `type=raw,value=mytag-tag-{{tag}}`,
           `type=raw,value=mytag-baseref-{{base_ref}}`,
@@ -632,6 +641,7 @@ describe('push', () => {
         main: 'mytag-master',
         partial: [
           'mytag-20200110',
+          "mytag-cd-20200110",
           'mytag-20200110-093000',
           'mytag-tag-',
           'mytag-baseref-',
@@ -642,6 +652,7 @@ describe('push', () => {
       [
         'user/app:mytag-master',
         'user/app:mytag-20200110',
+        'user/app:mytag-cd-20200110',
         'user/app:mytag-20200110-093000',
         'user/app:mytag-tag-',
         'user/app:mytag-baseref-',
@@ -768,6 +779,7 @@ describe('push', () => {
           `type=raw,value=mytag-{{branch}}`,
           `type=raw,value=mytag-{{date 'YYYYMMDD'}}`,
           `type=raw,value=mytag-{{date 'YYYYMMDD-HHmmss' tz='Asia/Tokyo'}}`,
+          `type=raw,value=mytag-src-{{commit_date 'YYYYMMDD'}}`,
           `type=raw,value=mytag-tag-{{tag}}`,
           `type=raw,value=mytag-baseref-{{base_ref}}`,
           `type=raw,value=mytag-defbranch,enable={{is_default_branch}}`
@@ -778,6 +790,7 @@ describe('push', () => {
         partial: [
           'mytag-20200110',
           'mytag-20200110-093000',
+          'mytag-src-20200110',
           'mytag-tag-',
           'mytag-baseref-',
           'mytag-defbranch'
@@ -788,6 +801,7 @@ describe('push', () => {
         'mytag-master',
         'mytag-20200110',
         'mytag-20200110-093000',
+        'mytag-src-20200110',
         'mytag-tag-',
         'mytag-baseref-',
         'mytag-defbranch'
@@ -2621,6 +2635,35 @@ describe('pr', () => {
       ],
       undefined
     ],
+    [
+      'pr12',
+      'event_pull_request.env',
+      {
+        images: ['org/app'],
+        tags: [
+          `type=raw,value={{commit_date YYYY-MM-DD-HHmmSS}}`,
+        ]
+      } as Inputs,
+      {
+        main: "2020-01-10T00-30-00Z",
+        partial: [],
+        latest: false
+      } as Version,
+      [
+        'org/app:2020-01-10T00-30-00Z'
+      ],
+      [
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.licenses=MIT",
+        "org.opencontainers.image.revision=a9c8c5828b91be19d9728548b24759e352367ef1",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=2020-01-10T00-30-00Z"
+      ],
+      undefined
+    ],
   ])('given %p with %p event', tagsLabelsTest);
 });
 
@@ -2969,13 +3012,41 @@ describe('pr-head-sha', () => {
         "org.opencontainers.image.version=mytag-master"
       ]
     ],
+    [
+      'pr12',
+      'event_pull_request.env',
+      {
+        images: ['org/app'],
+        tags: [
+          `type=raw,value=src-{{commit_date YYYY-MM-DD}}`,
+        ]
+      } as Inputs,
+      {
+        main: "src-2020-01-10T00-30-00Z",
+        partial: [],
+        latest: false
+      } as Version,
+      [
+        "org/app:src-2020-01-10T00-30-00Z",
+      ],
+      [
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.licenses=MIT",
+        "org.opencontainers.image.revision=3370e228f2209994d57af4427fe64e71bb79ac96",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=src-2020-01-10T00-30-00Z",
+      ]
+    ],
   ])('given %p with %p event', async (name: string, envFile: string, inputs: Inputs, exVersion: Version, exTags: Array<string>, exLabelsAnnotations: Array<string>) => {
     process.env = dotenv.parse(fs.readFileSync(path.join(__dirname, 'fixtures', envFile)));
     process.env.DOCKER_METADATA_PR_HEAD_SHA = 'true';
 
     const toolkit = new Toolkit();
     const repo = await toolkit.github.repoData();
-    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow), repo);
+    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow, toolkit), repo);
 
     const version = meta.version;
     expect(version).toEqual(exVersion);
@@ -3028,16 +3099,20 @@ describe('schedule', () => {
       {
         images: ['user/app'],
         tags: [
-          `type=schedule,pattern={{date 'YYYYMMDD'}}`
+          `type=schedule,pattern={{date 'YYYYMMDD'}}`,
+          `type=schedule,pattern=source-date-{{commit_date 'YYYY-MM-DD'}}`
         ]
       } as Inputs,
       {
         main: '20200110',
-        partial: [],
+        partial: [
+          "source-date-2020-01-10",
+        ],
         latest: false
       } as Version,
       [
-        'user/app:20200110'
+        'user/app:20200110',
+        'user/app:source-date-2020-01-10'
       ],
       [
         "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
@@ -3221,16 +3296,20 @@ describe('schedule', () => {
       {
         images: ['user/app'],
         tags: [
-          `type=schedule,pattern={{date 'YYYYMMDD-HHmmss' tz='Asia/Tokyo'}}`
+          `type=schedule,pattern={{date 'YYYYMMDD-HHmmss' tz='Asia/Tokyo'}}`,
+          `type=schedule,pattern=src-{{commit_date 'YYYYMMDD-HHmmss' tz='Asia/Tokyo'}}`,
         ]
       } as Inputs,
       {
         main: '20200110-093000',
-        partial: [],
+        partial: [
+          "src-20200110-093000",
+        ],
         latest: false
       } as Version,
       [
-        'user/app:20200110-093000'
+        'user/app:20200110-093000',
+        'user/app:src-20200110-093000'
       ],
       [
         "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
@@ -3312,6 +3391,39 @@ describe('release', () => {
         "org.opencontainers.image.version=v1.1.1"
       ],
       undefined
+    ],
+    [
+      'release03',
+      'event_release_created.env',
+      {
+        images: ['user/app'],
+        tags: [
+          `type=raw,value=src-{{commit_date 'YYYYMMDD-HHmmss'}}`,
+          `type=raw,value={{date 'YYYYMMDD-HHmmss'}}`,
+        ]
+      } as Inputs,
+      {
+      "main": "src-20200110-003000",
+        partial: [
+        "20200110-003000",
+        ],
+"latest": false,
+      } as Version,
+      [
+        "user/app:src-20200110-003000",
+        "user/app:20200110-003000",
+      ],
+      [
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.licenses=MIT",
+        "org.opencontainers.image.revision=860c1904a1ce19322e91ac35af1ab07466440c37",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+      "org.opencontainers.image.version=src-20200110-003000",
+      ],
+      undefined
     ]
   ])('given %s with %p event', tagsLabelsTest);
 });
@@ -4012,7 +4124,7 @@ describe('json', () => {
 
     const toolkit = new Toolkit();
     const repo = await toolkit.github.repoData();
-    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow), repo);
+    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow,toolkit), repo);
 
     const jsonOutput = meta.getJSON(['manifest']);
     expect(jsonOutput).toEqual(exJSON);
@@ -4528,7 +4640,7 @@ describe('bakeFile', () => {
 
     const toolkit = new Toolkit();
     const repo = await toolkit.github.repoData();
-    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow), repo);
+    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow,toolkit), repo);
 
     const bakeFileTags = meta.getBakeFile('tags');
     expect(JSON.parse(fs.readFileSync(bakeFileTags, 'utf8'))).toEqual(exBakeTags);
@@ -4592,7 +4704,7 @@ describe('bakeFileTagsLabels', () => {
 
     const toolkit = new Toolkit();
     const repo = await toolkit.github.repoData();
-    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow), repo);
+    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow,toolkit), repo);
 
     const bakeFile = meta.getBakeFileTagsLabels();
     expect(JSON.parse(fs.readFileSync(bakeFile, 'utf8'))).toEqual(exBakeDefinition);
@@ -4638,8 +4750,10 @@ describe('sepTags', () => {
     process.env = dotenv.parse(fs.readFileSync(path.join(__dirname, 'fixtures', envFile)));
 
     const toolkit = new Toolkit();
+
     const repo = await toolkit.github.repoData();
-    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow), repo);
+
+    const meta = new Meta({...getInputs(), ...inputs}, await getContext(ContextSource.workflow, toolkit), repo);
 
     expect(meta.getTags().join(inputs.sepTags)).toEqual(expTags);
   });

dist/index.js

@@ -157,5 +157,5 @@ const c=a(57147);const p=a(22037);const l=a(71017);const d=a(6113);const u={fs:c
  * @license [MIT]{@link https://github.com/archiverjs/node-zip-stream/blob/master/LICENSE}
  * @copyright (c) 2014 Chris Talkington, contributors.
  */
-var c=a(73837).inherits;var p=a(25445).ZipArchiveOutputStream;var l=a(25445).ZipArchiveEntry;var d=a(82072);var u=r.exports=function(r){if(!(this instanceof u)){return new u(r)}r=this.options=r||{};r.zlib=r.zlib||{};p.call(this,r);if(typeof r.level==="number"&&r.level>=0){r.zlib.level=r.level;delete r.level}if(!r.forceZip64&&typeof r.zlib.level==="number"&&r.zlib.level===0){r.store=true}r.namePrependSlash=r.namePrependSlash||false;if(r.comment&&r.comment.length>0){this.setComment(r.comment)}};c(u,p);u.prototype._normalizeFileData=function(r){r=d.defaults(r,{type:"file",name:null,namePrependSlash:this.options.namePrependSlash,linkname:null,date:null,mode:null,store:this.options.store,comment:""});var i=r.type==="directory";var a=r.type==="symlink";if(r.name){r.name=d.sanitizePath(r.name);if(!a&&r.name.slice(-1)==="/"){i=true;r.type="directory"}else if(i){r.name+="/"}}if(i||a){r.store=true}r.date=d.dateify(r.date);return r};u.prototype.entry=function(r,i,a){if(typeof 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getInputs(){return{context:u.getInput("context")||g.workflow,images:A.Util.getInputList("images",{ignoreComma:true,comment:"#"}),tags:A.Util.getInputList("tags",{ignoreComma:true,comment:"#"}),flavor:A.Util.getInputList("flavor",{ignoreComma:true,comment:"#"}),labels:A.Util.getInputList("labels",{ignoreComma:true,comment:"#"}),annotations:A.Util.getInputList("annotations",{ignoreComma:true,comment:"#"}),sepTags:u.getInput("sep-tags",{trimWhitespace:false})||`\n`,sepLabels:u.getInput("sep-labels",{trimWhitespace:false})||`\n`,sepAnnotations:u.getInput("sep-annotations",{trimWhitespace:false})||`\n`,bakeTarget:u.getInput("bake-target")||`docker-metadata-action`,githubToken:u.getInput("github-token")}}i.getInputs=getInputs;var g;(function(r){r["workflow"]="workflow";r["git"]="git"})(g||(i.ContextSource=g={}));function getContext(r){return d(this,void 0,void 0,(function*(){switch(r){case g.workflow:return getContextFromWorkflow();case g.git:return yield getContextFromGit();default:throw 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+var c=a(73837).inherits;var p=a(25445).ZipArchiveOutputStream;var l=a(25445).ZipArchiveEntry;var d=a(82072);var u=r.exports=function(r){if(!(this instanceof u)){return new u(r)}r=this.options=r||{};r.zlib=r.zlib||{};p.call(this,r);if(typeof r.level==="number"&&r.level>=0){r.zlib.level=r.level;delete r.level}if(!r.forceZip64&&typeof r.zlib.level==="number"&&r.zlib.level===0){r.store=true}r.namePrependSlash=r.namePrependSlash||false;if(r.comment&&r.comment.length>0){this.setComment(r.comment)}};c(u,p);u.prototype._normalizeFileData=function(r){r=d.defaults(r,{type:"file",name:null,namePrependSlash:this.options.namePrependSlash,linkname:null,date:null,mode:null,store:this.options.store,comment:""});var i=r.type==="directory";var a=r.type==="symlink";if(r.name){r.name=d.sanitizePath(r.name);if(!a&&r.name.slice(-1)==="/"){i=true;r.type="directory"}else if(i){r.name+="/"}}if(i||a){r.store=true}r.date=d.dateify(r.date);return r};u.prototype.entry=function(r,i,a){if(typeof a!=="function"){a=this._emitErrorCallback.bind(this)}i=this._normalizeFileData(i);if(i.type!=="file"&&i.type!=="directory"&&i.type!=="symlink"){a(new Error(i.type+" entries not currently supported"));return}if(typeof i.name!=="string"||i.name.length===0){a(new Error("entry name must be a non-empty string value"));return}if(i.type==="symlink"&&typeof i.linkname!=="string"){a(new Error("entry linkname must be a non-empty string value when type equals symlink"));return}var c=new l(i.name);c.setTime(i.date,this.options.forceLocalTime);if(i.namePrependSlash){c.setName(i.name,true)}if(i.store){c.setMethod(0)}if(i.comment.length>0){c.setComment(i.comment)}if(i.type==="symlink"&&typeof i.mode!=="number"){i.mode=40960}if(typeof i.mode==="number"){if(i.type==="symlink"){i.mode|=40960}c.setUnixMode(i.mode)}if(i.type==="symlink"&&typeof i.linkname==="string"){r=Buffer.from(i.linkname)}return p.prototype.entry.call(this,c,r,a)};u.prototype.finalize=function(){this.finish()}},98954:function(r,i,a){"use strict";var c=this&&this.__createBinding||(Object.create?function(r,i,a,c){if(c===undefined)c=a;var p=Object.getOwnPropertyDescriptor(i,a);if(!p||("get"in p?!i.__esModule:p.writable||p.configurable)){p={enumerable:true,get:function(){return i[a]}}}Object.defineProperty(r,c,p)}:function(r,i,a,c){if(c===undefined)c=a;r[c]=i[a]});var p=this&&this.__setModuleDefault||(Object.create?function(r,i){Object.defineProperty(r,"default",{enumerable:true,value:i})}:function(r,i){r["default"]=i});var l=this&&this.__importStar||function(r){if(r&&r.__esModule)return r;var i={};if(r!=null)for(var a in r)if(a!=="default"&&Object.prototype.hasOwnProperty.call(r,a))c(i,r,a);p(i,r);return i};var d=this&&this.__awaiter||function(r,i,a,c){function adopt(r){return r instanceof a?r:new a((function(i){i(r)}))}return new(a||(a=Promise))((function(a,p){function 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getInputs(){return{context:u.getInput("context")||g.workflow,images:A.Util.getInputList("images",{ignoreComma:true,comment:"#"}),tags:A.Util.getInputList("tags",{ignoreComma:true,comment:"#"}),flavor:A.Util.getInputList("flavor",{ignoreComma:true,comment:"#"}),labels:A.Util.getInputList("labels",{ignoreComma:true,comment:"#"}),annotations:A.Util.getInputList("annotations",{ignoreComma:true,comment:"#"}),sepTags:u.getInput("sep-tags",{trimWhitespace:false})||`\n`,sepLabels:u.getInput("sep-labels",{trimWhitespace:false})||`\n`,sepAnnotations:u.getInput("sep-annotations",{trimWhitespace:false})||`\n`,bakeTarget:u.getInput("bake-target")||`docker-metadata-action`,githubToken:u.getInput("github-token")}}i.getInputs=getInputs;var g;(function(r){r["workflow"]="workflow";r["git"]="git"})(g||(i.ContextSource=g={}));function getContext(r,i){return d(this,void 0,void 0,(function*(){switch(r){case g.workflow:return yield getContextFromWorkflow(i);case g.git:return yield getContextFromGit();default:throw new Error(`Invalid context source: ${r}`)}}))}i.getContext=getContext;function getContextFromWorkflow(r){return d(this,void 0,void 0,(function*(){var i,a,c;const p=h.GitHub.context;if(/pull_request_target/.test(p.eventName)){p.ref=`refs/pull/${p.payload.number}/merge`}if(/true/i.test(process.env.DOCKER_METADATA_PR_HEAD_SHA||"")){if((/pull_request/.test(p.eventName)||/pull_request_target/.test(p.eventName))&&((c=(a=(i=p.payload)===null||i===void 0?void 0:i.pull_request)===null||a===void 0?void 0:a.head)===null||c===void 0?void 0:c.sha)!=undefined){p.sha=p.payload.pull_request.head.sha}}return Object.assign({commitDate:yield getCommitDateFromWorkflow(p.sha,r)},p)}))}function getContextFromGit(){return d(this,void 0,void 0,(function*(){const r=yield b.Git.Line truncated
 //# sourceMappingURL=index.js.map

dist/index.js.map

@@ -1 +1 @@
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truncated
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truncated

src/context.ts

@@ -1,8 +1,13 @@
 import * as core from '@actions/core';
-import {Context} from '@actions/github/lib/context';
+import {Context as GithubContext} from '@actions/github/lib/context';
 import {Util} from '@docker/actions-toolkit/lib/util';
 import {Git} from '@docker/actions-toolkit/lib/git';
 import {GitHub} from '@docker/actions-toolkit/lib/github';
+import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
+
+export interface Context extends GithubContext {
+  commitDate: Date;
+}
 
 export interface Inputs {
   context: ContextSource;
@@ -39,10 +44,10 @@ export enum ContextSource {
   git = 'git'
 }
 
-export async function getContext(source: ContextSource): Promise<Context> {
+export async function getContext(source: ContextSource, toolkit: Toolkit): Promise<Context> {
   switch (source) {
     case ContextSource.workflow:
-      return getContextFromWorkflow();
+      return await getContextFromWorkflow(toolkit);
     case ContextSource.git:
       return await getContextFromGit();
     default:
@@ -50,7 +55,7 @@ export async function getContext(source: ContextSource): Promise<Context> {
   }
 }
 
-function getContextFromWorkflow(): Context {
+async function getContextFromWorkflow(toolkit: Toolkit): Promise<Context> {
   const context = GitHub.context;
 
   // Needs to override Git reference with pr ref instead of upstream branch ref
@@ -69,9 +74,56 @@ function getContextFromWorkflow(): Context {
     }
   }
 
-  return context;
+  return {
+    commitDate: await getCommitDateFromWorkflow(context.sha, toolkit),
+    ...context
+  } as Context;
 }
 
 async function getContextFromGit(): Promise<Context> {
-  return await Git.context();
+  const ctx = await Git.context();
+
+  return {
+    commitDate: await Git.commitDate(ctx.sha),
+    ...ctx
+  } as Context;
+}
+
+async function getCommitDateFromWorkflow(sha: string, toolkit: Toolkit): Promise<Date> {
+  const event = GitHub.context.payload as unknown as {
+    // branch push
+    commits?: Array<{
+      timestamp: string;
+      // commit sha
+      id: string;
+    }>;
+    // tags
+    head_commit?: {
+      timestamp: string;
+      // commit sha
+      id: string;
+    };
+  };
+
+  if (event.commits) {
+    const commitDate = event.commits.find(x => x.id === sha)?.timestamp;
+    if (commitDate) {
+      return new Date(commitDate);
+    }
+  }
+
+  if (event.head_commit) {
+    if (event.head_commit.id === sha) {
+      return new Date(event.head_commit.timestamp);
+    }
+  }
+
+  // fallback to github api for commit date
+  const commit = await toolkit.github.octokit.request('GET /repos/{owner}/{repo}/commits/{commit_sha}', {
+    commit_sha: sha,
+    owner: GitHub.context.repo.owner,
+    repo: GitHub.context.repo.repo
+  });
+
+  return new Date(commit.data.committer.date);
 }

src/main.ts

@@ -11,7 +11,7 @@ actionsToolkit.run(
   async () => {
     const inputs: Inputs = getInputs();
     const toolkit = new Toolkit({githubToken: inputs.githubToken});
-    const context = await getContext(inputs.context);
+    const context = await getContext(inputs.context, toolkit);
     const repo = await toolkit.github.repoData();
 
     await core.group(`Context info`, async () => {
@@ -23,6 +23,7 @@ actionsToolkit.run(
       core.info(`actor: ${context.actor}`);
       core.info(`runNumber: ${context.runNumber}`);
       core.info(`runId: ${context.runId}`);
+      core.info(`commitDate: ${context.commitDate}`);
     });
 
     if (core.isDebug()) {

src/meta.ts

@@ -5,11 +5,10 @@ import moment from 'moment-timezone';
 import * as pep440 from '@renovate/pep440';
 import * as semver from 'semver';
 import * as core from '@actions/core';
-import {Context} from '@actions/github/lib/context';
 import {Context as ToolkitContext} from '@docker/actions-toolkit/lib/context';
 import {GitHubRepo} from '@docker/actions-toolkit/lib/types/github';
 
-import {Inputs} from './context';
+import {Inputs, Context} from './context';
 import * as icl from './image';
 import * as tcl from './tag';
 import * as fcl from './flavor';
@@ -115,6 +114,7 @@ export class Meta {
     }
 
     const currentDate = this.date;
+    const commitDate = this.context.commitDate;
     const vraw = this.setValue(
       handlebars.compile(tag.attrs['pattern'])({
         date: function (format, options) {
@@ -130,6 +130,20 @@ export class Meta {
             }
           });
           return m.tz(tz).format(format);
+        },
+        commit_date: function (format, options) {
+          const m = moment(commitDate);
+          let tz = 'UTC';
+          Object.keys(options.hash).forEach(key => {
+            switch (key) {
+              case 'tz':
+                tz = options.hash[key];
+                break;
+              default:
+                throw new Error(`Unknown ${key} attribute`);
+            }
+          });
+          return m.tz(tz).format(format);
         }
       }),
       tag
@@ -361,6 +375,7 @@ export class Meta {
   private setGlobalExp(val): string {
     const context = this.context;
     const currentDate = this.date;
+    const commitDate = this.context.commitDate;
     return handlebars.compile(val)({
       branch: function () {
         if (!/^refs\/heads\//.test(context.ref)) {
@@ -388,6 +403,20 @@ export class Meta {
         }
         return '';
       },
+      commit_date: function (format, options) {
+        const m = moment(commitDate);
+        let tz = 'UTC';
+        Object.keys(options.hash).forEach(key => {
+          switch (key) {
+            case 'tz':
+              tz = options.hash[key];
+              break;
+            default:
+              throw new Error(`Unknown ${key} attribute`);
+          }
+        });
+        return m.tz(tz).format(format);
+      },
       is_default_branch: function () {
         const branch = context.ref.replace(/^refs\/heads\//g, '');
         // TODO: "base_ref" is available in the push payload but doesn't always seem to