diff --git a/Makefile b/Makefile
index 148512c..97ea265 100644
--- a/Makefile
+++ b/Makefile
@@ -2,3 +2,6 @@ build:
 	env CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o ./bin/sendmail-http
 clean:
 	rm ./bin/sendmail-http
+
+docker:
+	docker build -t danyanya/postfix-http .
\ No newline at end of file