Update Makefile targets and doc

README.md

@@ -8,7 +8,7 @@ A lightweight Go service that acts as a middleware between Slack webhooks and nt
 - ✅ Forwards alerts to self-hosted ntfy servers
 - ✅ Bearer token authentication support
 - ✅ Health check endpoint
-- ✅ Lightweight Docker container (~8MB)
+- ✅ Lightweight Docker container (~8.4MB)
 - ✅ High performance and low resource usage
 
 ## Quick Start
@@ -59,18 +59,18 @@ A lightweight Go service that acts as a middleware between Slack webhooks and nt
 
 ### Build locally
 ```bash
-go build -o middleware main.go
-./middleware
+make build
+make run
 ```
 
 ### Build Docker image
 ```bash
-docker build -t slack-to-ntfy .
+make docker-build
 ```
 
 ### Run tests
 ```bash
-go test ./...
+make test
 ```
 
 ## License