Create Dockerfile

Dockerfile

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+FROM golang:1.21-alpine AS builder
+WORKDIR /app
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -o omniroute .
+
+FROM alpine:latest
+RUN apk --no-cache add ca-certificates tzdata
+WORKDIR /app
+COPY --from=builder /app/omniroute .
+
+# 锁死 Hugging Face 专属端口
+ENV PORT=7860
+ENV OMNIROUTE_PORT=7860
+EXPOSE 7860
+
+CMD ["./omniroute"]