FROM golang:1.22.0-alpine AS builder

WORKDIR /build

COPY go.mod go.sum ./

RUN go mod download

COPY . .

RUN CGO_ENABLED=0 GOOS=linux go build -o backend .

FROM alpine:3.19

EXPOSE 8080
WORKDIR /app

RUN apk add --no-cache ca-certificates

COPY --from=builder /build/backend .

CMD ["/app/backend", "server"]