fix(cmd/containerbuild): support commas in --docker-tags

Signed-off-by: Xe Iaso <me@xeiaso.net>

cmd/containerbuild/main.go

@@ -46,6 +46,11 @@ func main() {
 		)
 	}
 
+	if strings.Contains(*dockerTags, ",") {
+		newTags := strings.Join(strings.Split(*dockerTags, ","), "\n")
+		dockerTags = &newTags
+	}
+
 	setOutput("docker_image", strings.SplitN(*dockerTags, "\n", 2)[0])
 
 	version, err := run("git describe --tags --always --dirty")

docs/docs/CHANGELOG.md

@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add validation warning when persistent storage is used without setting signing keys
 - Fixed `robots2policy` to properly group consecutive user agents into `any:` instead of only processing the last one ([#925](https://github.com/TecharoHQ/anubis/pull/925))
 - Add the [`s3api` storage backend](./admin/policies.mdx#s3api) to allow Anubis to use S3 API compatible object storage as its storage backend.
+- Make `cmd/containerbuild` support commas for separating elements of the `--docker-tags` argument as well as newlines.
 
 ### Bug Fixes