FROM golang:1.21-alpine AS builder

WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download

COPY . .
RUN CGO_ENABLED=1 GOOS=linux go build -a -installsuffix cgo -o main ./cmd

FROM alpine:latest

RUN apk --no-cache add ca-certificates

WORKDIR /root/
COPY --from=builder /app/main .
COPY --from=builder /app/web ./web
COPY --from=builder /app/configs ./configs

EXPOSE 53/udp 67/udp 8080/tcp

CMD ["./main", "-config", "configs/config.json"]