diff --git a/apps/maddy/auth/.gitignore b/apps/maddy/auth/.gitignore
index cd8d050..824d9a9 100644
--- a/apps/maddy/auth/.gitignore
+++ b/apps/maddy/auth/.gitignore
@@ -1 +1,2 @@
-auth-smtp
+auth-smtp_amd64
+auth-smtp_arm64
diff --git a/apps/maddy/auth/Dockerfile b/apps/maddy/auth/Dockerfile
index 3b1168d..342f121 100644
--- a/apps/maddy/auth/Dockerfile
+++ b/apps/maddy/auth/Dockerfile
@@ -1,3 +1,6 @@
 FROM giolekva/maddy:v0.4.4
 
-COPY auth-smtp /usr/bin/auth-smtp
+ARG TARGETARCH
+
+COPY auth-smtp_${TARGETARCH} /usr/bin/auth-smtp
+RUN chmod +x /usr/bin/auth-smtp
diff --git a/apps/maddy/auth/Makefile b/apps/maddy/auth/Makefile
index 7bd9ea3..2d7d61f 100644
--- a/apps/maddy/auth/Makefile
+++ b/apps/maddy/auth/Makefile
@@ -1,17 +1,21 @@
 clean:
-	rm -f auth-smtp
+	rm -f auth-smtp_*
 
-build: clean
-	go build -o auth-smtp *.go
+build_arm64: export CGO_ENABLED=0
+build_arm64: export GO111MODULE=on
+build_arm64: export GOOS=linux
+build_arm64: export GOARCH=arm64
+build_arm64:
+	go build -o auth-smtp_arm64 *.go
 
-image: build
-	docker build --tag=giolekva/maddy-auth-smtp:v0.4.4 . --platform=linux/arm64
+build_amd64: export CGO_ENABLED=0
+build_amd64: export GO111MODULE=on
+build_amd64: export GOOS=linux
+build_amd64: export GOARCH=amd64
+build_amd64:
+	go build -o auth-smtp_amd64 *.go
 
-push: image
-	docker push giolekva/maddy-auth-smtp:v0.4.4
+build: clean build_arm64 build_amd64
 
-push_arm64: export GOOS=linux
-push_arm64: export GOARCH=arm64
-push_arm64: export CGO_ENABLED=0
-push_arm64: export GO111MODULE=on
-push_arm64: push
+push: build
+	docker buildx build --tag=giolekva/maddy-auth-smtp:v0.4.4 . --platform=linux/arm64,linux/amd64 --push