From 675e2ea211998c6970dc5cb8eaab13e80816a886 Mon Sep 17 00:00:00 2001
From: Carlos Alexandro Becker <caarlos0@gmail.com>
Date: Thu, 18 Jan 2018 23:55:26 -0200
Subject: [PATCH] feat: allow Major, Minor and Patch fields on docker tags

---
 pipeline/docker/docker.go      | 13 +++++++++++--
 pipeline/docker/docker_test.go |  4 ++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/pipeline/docker/docker.go b/pipeline/docker/docker.go
index 64f934219..677bd7005 100644
--- a/pipeline/docker/docker.go
+++ b/pipeline/docker/docker.go
@@ -11,6 +11,7 @@ import (
 	"text/template"
 
 	"github.com/apex/log"
+	"github.com/masterminds/semver"
 	"github.com/pkg/errors"
 	"golang.org/x/sync/errgroup"
 
@@ -119,13 +120,21 @@ func tagName(ctx *context.Context, tagTemplate string) (string, error) {
 	if err != nil {
 		return "", err
 	}
+	sv, err := semver.NewVersion(ctx.Git.CurrentTag)
+	if err != nil {
+		return "", err
+	}
 	data := struct {
-		Version, Tag string
-		Env          map[string]string
+		Version, Tag        string
+		Major, Minor, Patch int64
+		Env                 map[string]string
 	}{
 		Version: ctx.Version,
 		Tag:     ctx.Git.CurrentTag,
 		Env:     ctx.Env,
+		Major:   sv.Major(),
+		Minor:   sv.Minor(),
+		Patch:   sv.Patch(),
 	}
 	err = t.Execute(&out, data)
 	return out.String(), err
diff --git a/pipeline/docker/docker_test.go b/pipeline/docker/docker_test.go
index fba9ef497..7f24ccf6e 100644
--- a/pipeline/docker/docker_test.go
+++ b/pipeline/docker/docker_test.go
@@ -65,6 +65,8 @@ func TestRunPipe(t *testing.T) {
 				Binary:     "mybin",
 				TagTemplates: []string{
 					"{{.Tag}}-{{.Env.FOO}}",
+					"v{{.Major}}",
+					"v{{.Major}}.{{.Minor}}",
 					"latest",
 				},
 				Files: []string{
@@ -73,6 +75,8 @@ func TestRunPipe(t *testing.T) {
 			},
 			expect: []string{
 				registry + "goreleaser/test_run_pipe:v1.0.0-123",
+				registry + "goreleaser/test_run_pipe:v1",
+				registry + "goreleaser/test_run_pipe:v1.0",
 				registry + "goreleaser/test_run_pipe:latest",
 			},
 			err: "",