# syntax=docker/dockerfile:1

FROM golang:1.22-alpine AS build

WORKDIR /app

COPY go.mod ./
RUN go mod download

COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -o /url-shortener ./main.go

FROM alpine:3.20

RUN adduser -D -H appuser \
    && mkdir -p /data \
    && chown -R appuser:appuser /data

USER appuser

COPY --from=build /url-shortener /usr/local/bin/url-shortener

EXPOSE 8080

ENV ADDR=:8080
ENV DB_PATH=/data/shortener.db
ENV BASE_URL=http://localhost:8080
ENV AUTH_MODE=local

VOLUME ["/data"]

CMD ["url-shortener"]