# syntax=docker/dockerfile:1

FROM --platform=$BUILDPLATFORM golang:1.23-alpine AS build

WORKDIR /src
ENV GOTOOLCHAIN=local

RUN apk add --no-cache ca-certificates

COPY go.mod go.sum ./
RUN --mount=type=cache,target=/go/pkg/mod go mod download

COPY . .

ARG TARGETOS=linux
ARG TARGETARCH
RUN --mount=type=cache,target=/go/pkg/mod \
    --mount=type=cache,target=/root/.cache/go-build \
    CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=${TARGETARCH:-$(go env GOARCH)} \
    go build -trimpath -tags netgo -ldflags="-s -w" -o /out/overleaf-registration-be .

FROM scratch AS runtime

COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=build /out/overleaf-registration-be /overleaf-registration-be

USER 65532:65532
EXPOSE 3000

ENTRYPOINT ["/overleaf-registration-be"]