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/gallery .

FROM alpine:3.22

RUN addgroup -S -g 1000 app && adduser -S -D -u 1000 -G app app

WORKDIR /app
COPY --from=builder --chown=app:app /out/gallery /app/gallery
RUN mkdir /app/data && chown app:app /app/data

VOLUME /app/data
EXPOSE 8020
ENV HOME=/app
USER app
ENTRYPOINT ["/app/gallery"]
CMD ["serve", "--addr", ":8020", "--data", "/app/data"]