# ---
# Global ARGs for FROM statements
# This needs to be declared in the global scope otherwise the build will fail in Docker & Podman.
# Docker:
#   WARNING: UndefinedArgInFrom - https://docs.docker.com/go/dockerfile/rule/undefined-arg-in-from/
#   FROM argument 'BASE_IMAGE' is not declared
# Podman: Error: determining starting point for build: no FROM statement found
# ---
ARG BASE_IMAGE=gcr.io/distroless/base-nossl-debian13:latest

# ---
# Stage 1: Build binary, create default config file
# ---
FROM --platform=$BUILDPLATFORM ghcr.io/project-zot/golang:1.26 AS builder

ARG TARGETOS
ARG TARGETARCH
ARG COMMIT

RUN mkdir -p /go/src/github.com/project-zot/zot
WORKDIR /go/src/github.com/project-zot/zot
COPY . .
RUN make COMMIT=$COMMIT OS=$TARGETOS ARCH=$TARGETARCH clean exporter-minimal
RUN echo '{\n\
    "Server": {\n\
        "protocol": "http",\n\
        "host": "127.0.0.1",\n\
        "port": "5000"\n\
    },\n\
    "Exporter": {\n\
        "port": "5001",\n\
        "log": {\n\
            "level": "debug"\n\
        }\n\
    }\n\
}\n' > config.json && cat config.json

# ---
# Stage 2: Final image with nothing but binary and default config file
# ---
FROM $BASE_IMAGE AS final
ARG TARGETOS
ARG TARGETARCH
COPY --from=builder /go/src/github.com/project-zot/zot/bin/zxp-$TARGETOS-$TARGETARCH /zxp
COPY --from=builder /go/src/github.com/project-zot/zot/config.json /etc/zxp/config.json
ENTRYPOINT ["/zxp"]
EXPOSE 5001
CMD ["config", "/etc/zxp/config.json"]
