# syntax=docker/dockerfile:1

FROM --platform=$BUILDPLATFORM golang:1.25-alpine AS build
WORKDIR /src

ARG TARGETOS
ARG TARGETARCH

RUN apk add --no-cache git

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

COPY . .

# views/pages_templ.go ist bereits generiert und im Repo eingecheckt,
# daher kein "templ generate" im Build notwendig.
RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH \
    go build -trimpath -ldflags="-s -w" -o /out/server ./cmd/server
RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH \
    go build -trimpath -ldflags="-s -w" -o /out/admin ./cmd/admin

FROM alpine:3.20
RUN apk add --no-cache ca-certificates tzdata && \
    addgroup -S ebooks && adduser -S ebooks -G ebooks

WORKDIR /app
COPY --from=build /out/server /app/server
COPY --from=build /out/admin /app/admin
COPY static ./static

ENV ADDR=:8080
ENV BOOKS_DIR=/data/books
ENV USERS_DB=/data/users.db

RUN mkdir -p /data/books && chown -R ebooks:ebooks /data /app
VOLUME ["/data"]
USER ebooks

EXPOSE 8080
ENTRYPOINT ["/app/server"]