FROM golang:1.22-alpine AS builder

WORKDIR /build
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN go build -o ftp-server .

FROM alpine:3.19

RUN apk add --no-cache ca-certificates tzdata
ENV TZ=Asia/Shanghai

WORKDIR /app
COPY --from=builder /build/ftp-server .
COPY static/ ./static/

RUN mkdir -p /app/data /app/ftp_root

EXPOSE 2121 8080 50000-50100

VOLUME ["/app/data", "/app/ftp_root", "/app/config.json"]

ENTRYPOINT ["./ftp-server"]
CMD ["-config", "/app/config.json"]