feat: add Docker build

.dockerignore

@@ -0,0 +1,6 @@
+.git
+.gitignore
+.cursor
+*.md
+spore-gateway
+

Dockerfile

@@ -0,0 +1,31 @@
+# Build stage
+FROM golang:1.24-alpine AS builder
+
+WORKDIR /app
+
+# Copy go mod files
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o spore-gateway ./main.go
+
+# Runtime stage
+FROM alpine:latest
+
+RUN apk --no-cache add ca-certificates
+
+WORKDIR /root/
+
+# Copy the binary from builder
+COPY --from=builder /app/spore-gateway .
+
+# Expose ports
+EXPOSE 3001 4210
+
+# Run the application
+CMD ["./spore-gateway"]
+

Makefile

@@ -0,0 +1,45 @@
+.PHONY: build run clean docker-build docker-run docker-push
+
+# Build the application
+build:
+	go build -o spore-gateway main.go
+
+# Run the application
+run:
+	go run main.go
+
+# Clean build artifacts
+clean:
+	rm -f spore-gateway
+
+# Format code
+fmt:
+	go fmt ./...
+
+# Lint code (requires golangci-lint)
+lint:
+	golangci-lint run
+
+# Install dependencies
+deps:
+	go mod download
+	go mod tidy
+
+# Docker variables
+DOCKER_REGISTRY ?= 
+IMAGE_NAME = wirelos/spore-gateway
+IMAGE_TAG ?= latest
+FULL_IMAGE_NAME = $(if $(DOCKER_REGISTRY),$(DOCKER_REGISTRY)/$(IMAGE_NAME),$(IMAGE_NAME)):$(IMAGE_TAG)
+
+# Build Docker image
+docker-build:
+	docker build -t $(FULL_IMAGE_NAME) .
+
+# Run Docker container
+docker-run:
+	docker run --network host --rm $(FULL_IMAGE_NAME)
+
+# Push Docker image
+docker-push:
+	docker push $(FULL_IMAGE_NAME)
+

internal/discovery/discovery.go

@@ -82,8 +82,8 @@ func (nd *NodeDiscovery) handleUDPMessage(message string, remoteAddr *net.UDPAdd
 			fullMessage := "node/update:" + payload
 			nd.handleNodeUpdate(remoteAddr.IP.String(), fullMessage)
 		},
-		"raw": func(payload string, remoteAddr *net.UDPAddr) {
+		"RAW": func(payload string, remoteAddr *net.UDPAddr) {
-			nd.logger.WithField("message", "raw:"+payload).Debug("Received raw message")
+			nd.logger.WithField("message", "RAW:"+payload).Debug("Received raw message")
 		},
 		"cluster/event": func(payload string, remoteAddr *net.UDPAddr) {
 			nd.handleClusterEvent(payload, remoteAddr)

main.go

@@ -65,9 +65,15 @@ func main() {
 
 	// Initialize MQTT client if enabled
 	var mqttClient *mqtt.MQTTClient
-	if *mqttServer != "" {
+	// Check for MQTT server from flag or environment variable
-		log.WithField("server", *mqttServer).Info("Initializing MQTT client")
+	mqttServerURL := *mqttServer
-		mqttClient = mqtt.NewMQTTClientFromEnv(*mqttServer)
+	if mqttServerURL == "" {
+		mqttServerURL = os.Getenv("MQTT_SERVER")
+	}
+
+	if mqttServerURL != "" {
+		log.WithField("server", mqttServerURL).Info("Initializing MQTT client")
+		mqttClient = mqtt.NewMQTTClientFromEnv(mqttServerURL)
 
 		// Set callback to forward MQTT messages to WebSocket
 		mqttClient.SetMessageCallback(func(topic string, data []byte) {