FROM golang:1.22-alpine AS builder

ENV GOTOOLCHAIN=auto

RUN apk add --no-cache git

WORKDIR /app

COPY backend/go.mod backend/go.sum ./
RUN go mod download

COPY backend/ ./

RUN CGO_ENABLED=0 GOOS=linux go build -o /bin/discovery ./cmd/discovery

FROM alpine:3.19

RUN apk add --no-cache ca-certificates tzdata

COPY --from=builder /bin/discovery /bin/discovery

ENV DB_HOST=db \
    DB_PORT=5432 \
    DB_NAME=rss \
    DB_USER=rss \
    DB_PASS=rss \
    DISCOVERY_INTERVAL=900 \
    DISCOVERY_BATCH=10 \
    MAX_FEEDS_PER_URL=5

ENTRYPOINT ["/bin/discovery"]