feat: 使用docker部署

backend/Dockerfile

@@ -0,0 +1,37 @@
+# Build stage
+FROM golang:1.25-alpine AS builder
+
+WORKDIR /app
+
+# Install build dependencies
+RUN apk add --no-cache git
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download all dependencies
+RUN go mod download
+
+# Copy the source code
+COPY . .
+
+# Build the application
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o main ./cmd/main.go
+
+# Final stage
+FROM alpine:latest
+
+WORKDIR /app
+
+# Install ca-certificates for HTTPS
+RUN apk --no-cache add ca-certificates tzdata
+
+# Copy binary from builder
+COPY --from=builder /app/main .
+COPY --from=builder /app/.env.example .
+
+# Expose port
+EXPOSE 8080
+
+# Command to run
+CMD ["./main"]