Reorganize folder

mqtt_presence_redis_go/Dockerfile

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+# syntax=docker/dockerfile:1
+
+# Build stage
+FROM golang:1.22-alpine AS builder
+WORKDIR /app
+
+# Copy go mod files and download dependencies
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy the rest of the application
+COPY . .
+
+# Build the application
+RUN go build -o mqtt_presence_redis_go mqtt_presence_redis_go.go
+
+# Runtime stage
+FROM alpine:3.20
+WORKDIR /app
+COPY --from=builder /app/mqtt_presence_redis_go .
+
+# Expose default MQTT port if needed
+EXPOSE 1883
+
+# Command to run the binary
+CMD ["./mqtt_presence_redis_go"]