Add Dockerfile

Dockerfile

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+FROM golang:1.24-alpine AS builder
+
+WORKDIR /src
+
+COPY go.mod ./
+RUN go mod download
+COPY main.go ./main.go
+
+RUN go build -ldflags "-s -w" -o reqinfo
+
+FROM gcr.io/distroless/static-debian12:latest
+
+WORKDIR /src
+
+COPY --from=builder /src/reqinfo /src/reqinfo
+
+ENTRYPOINT ["./reqinfo"]