FROM rust:alpine AS builder

# Use a dummy project to ensure the crate index is up to date.
RUN set -e; \
    cargo new --color always /tmp/dummy; \
    cargo add --color always --manifest-path /tmp/dummy/Cargo.toml serde; \
    rm -rf /tmp/dummy; \
    cargo new --color always --bin /app  

WORKDIR /app

RUN apk add --no-cache \
    # openssl-dev \
    # pkgconfig \
    musl-dev

# Build dependencies with a dummy project to cache those regardless of changes
# in the actual source code
COPY ./Cargo.toml ./Cargo.lock /app/
RUN cargo build --color always --release --locked

COPY . .
RUN touch -a -m ./src/main.rs && cargo build --color always --release --locked

FROM alpine AS final

RUN apk add --no-cache ca-certificates

ENV RUST_BACKTRACE=1
ENV RUST_LOG=info

COPY --from=builder /app/target/release/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'"
ARG VERSION="0.1.0"
LABEL version="$VERSION"
COPY ./shims/${VARIANT}/* /opt/resource/