From 47f216af83bc83b9e76121810b8bfaa2f25ae747 Mon Sep 17 00:00:00 2001
From: Lev Vereshchagin <mail@vrslev.com>
Date: Fri, 17 Dec 2021 12:24:57 +0300
Subject: [PATCH] Parse and set short tags from git tag in bake file

---
 TODO.md         | 4 ++--
 docker-bake.hcl | 8 ++++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/TODO.md b/TODO.md
index 0a228490..af42a1a5 100644
--- a/TODO.md
+++ b/TODO.md
@@ -2,5 +2,5 @@
 - [ ] Test with helm chart
 - [x] Play With Docker generation
 - [x] Custom app compose and dockerfile examples
-- [ ] Add v13 v12 tags
-- [ ] Use &\* feature of yaml to describe backends
+- [x] Add v13 v12 tags
+- [x] Use &\* feature of yaml to describe backends
diff --git a/docker-bake.hcl b/docker-bake.hcl
index 64744ed4..687d8503 100644
--- a/docker-bake.hcl
+++ b/docker-bake.hcl
@@ -43,8 +43,12 @@ group "default" {
 
 function "tag" {
     params = [repo, version]
-    # If `version` parameter is develop (development build) then use tag `latest`
-    result = ["${version}" == "develop" ? "${USERNAME}/${repo}:latest" : "${USERNAME}/${repo}:${version}"]
+    result = [
+      # If `version` param is develop (development build) then use tag `latest`
+      "${version}" == "develop" ? "${USERNAME}/${repo}:latest" : "${USERNAME}/${repo}:${version}",
+      # Make short tag for major version if possible. For example, from v13.16.0 make v13.
+      can(regex("(v[0-9]+)[.]", "${version}")) ? "${USERNAME}/${repo}:${regex("(v[0-9]+)[.]", "${version}")[0]}" : "",
+    ]
 }
 
 target "default-args" {