Add Dockerfile

Dockerfile

@@ -0,0 +1,23 @@
+FROM golang:1.20.1-alpine3.17 AS builder
+
+ENV GOPROXY=https://goproxy.cn,direct
+
+WORKDIR /src
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download all dependencies. Dependencies will be cached if the go.mod and the go.sum files are not changed
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Build the Go app
+RUN go build -o /go/bin/app
+
+FROM alpine:3.17
+
+COPY --from=builder /go/bin/app /go/bin/app
+
+CMD ["/go/bin/app"]