From 329239ef2e983c30598c5cdff18faf2ac2a1cefc Mon Sep 17 00:00:00 2001
From: CrazyMax <crazy-max@users.noreply.github.com>
Date: Thu, 19 Aug 2021 19:53:18 +0200
Subject: [PATCH] Add global expression "date"

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
---
 README.md     | 1 +
 dist/index.js | 4 ++++
 src/meta.ts   | 4 ++++
 3 files changed, 9 insertions(+)

diff --git a/README.md b/README.md
index 419820d1f..220b7b06b 100644
--- a/README.md
+++ b/README.md
@@ -612,6 +612,7 @@ attributes are available:
 | `{{branch}}`             | `master`             |
 | `{{tag}}`                | `v1.2.3`             |
 | `{{sha}}`                | `90dd603`            |
+| `{{date 'YYYYMMDD'}}`    | `20210326`           |
 
 ```yaml
 tags: |
diff --git a/dist/index.js b/dist/index.js
index 916aace39..3eb91a000 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -682,6 +682,7 @@ class Meta {
     }
     setGlobalExp(val) {
         const ctx = this.context;
+        const currentDate = this.date;
         return handlebars.compile(val)({
             branch: function () {
                 if (!/^refs\/heads\//.test(ctx.ref)) {
@@ -697,6 +698,9 @@ class Meta {
             },
             sha: function () {
                 return ctx.sha.substr(0, 7);
+            },
+            date: function (format) {
+                return moment_1.default(currentDate).utc().format(format);
             }
         });
     }
diff --git a/src/meta.ts b/src/meta.ts
index 5746d1443..ff29c6535 100644
--- a/src/meta.ts
+++ b/src/meta.ts
@@ -323,6 +323,7 @@ export class Meta {
 
   private setGlobalExp(val): string {
     const ctx = this.context;
+    const currentDate = this.date;
     return handlebars.compile(val)({
       branch: function () {
         if (!/^refs\/heads\//.test(ctx.ref)) {
@@ -338,6 +339,9 @@ export class Meta {
       },
       sha: function () {
         return ctx.sha.substr(0, 7);
+      },
+      date: function (format) {
+        return moment(currentDate).utc().format(format);
       }
     });
   }