Merge pull request #465 from magiconair/checksums-with-env-vars

feat: allow env vars for checksum name_template

docs/070-checksum.md

@@ -16,6 +16,7 @@ checksum:
   # - ProjectName
   # - Tag
   # - Version (Git tag without `v` prefix)
+  # - Env (environment variables)
   # Default is `{{ .ProjectName }}_{{ .Version }}_checksums.txt`.
   name_template: "{{ .ProjectName }}_checksums.txt"
 ```

pipeline/checksums/name.go

@@ -14,11 +14,15 @@ func filenameFor(ctx *context.Context) (string, error) {
 		return "", err
 	}
 	err = t.Execute(&out, struct {
-		ProjectName, Tag, Version string
+		ProjectName string
+		Tag         string
+		Version     string
+		Env         map[string]string
 	}{
 		ProjectName: ctx.Config.ProjectName,
 		Tag:         ctx.Git.CurrentTag,
 		Version:     ctx.Version,
+		Env:         ctx.Env,
 	})
 	return out.String(), err
 }