FROM golang:1.25-alpine AS builder

WORKDIR /src

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

COPY . .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" -o /out/server ./cmd/server

FROM alpine:3.20

RUN addgroup -S app && adduser -S -G app app

WORKDIR /app
COPY --from=builder /out/server /app/server
COPY config.example.json /app/config.example.json

ENV PORT=8080
EXPOSE 8080

USER app
ENTRYPOINT ["/app/server"]