FROM rust:1.83.0-alpine3.20 AS builder

RUN apk add --no-cache musl-dev;

WORKDIR /app
COPY . .

RUN --mount=type=cache,id=cargo-registry,target=/usr/local/cargo/registry \
    --mount=type=cache,id=cargo-target,target=/app/target \
    set -e; \
    cargo build --color always --release --locked; \
    # The cache will disappear after this directive, so we
    # need to copy the binary to a persistent place.
    cp target/release/gitea /app/gitea;

FROM alpine:3.21.0 AS final

RUN apk add --no-cache ca-certificates;

ENV RUST_BACKTRACE=1
ENV RUST_LOG=info

COPY --from=builder /app/gitea /bin/

# Put this last, as it's the only thing that's different between variants.
# This way, the previous layers can all be shared.

ARG VARIANT="missing build arg 'VARIANT'"
COPY ./shims/${VARIANT}/* /opt/resource/