diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e4c8053..2c393fd 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -20,3 +20,10 @@ go install
 go run .
 ```
 
+### Build for docker
+
+```shell
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64
+docker compose build
+```
+
diff --git a/Makefile b/Makefile
index 6199265..847b8e9 100644
--- a/Makefile
+++ b/Makefile
@@ -3,12 +3,12 @@ PLATFORM=local
 
 # Build all files.
 build:
-	@echo "==> Building ./dist/sdm"
+	@echo "==> Building..."
 	env GOOS=linux GOARCH=amd64 go build -o dist/digitalstrom-mqtt-amd64 ./main.go
 .PHONY: build
 
 build-arm:
-	@echo "==> Building ./dist/sdm"
+	@echo "==> Building..."
 	env GOOS=linux GOARCH=arm GOARM=5 go build -o dist/digitalstrom-mqtt-arm ./main.go
 .PHONY: build