FROM rustlang/rust:nightly as builder
WORKDIR /opt/tarpaulin
RUN env USER=root cargo init .
COPY Cargo.toml .
COPY Cargo.lock .
COPY build.rs .
RUN mkdir .cargo
RUN cargo vendor > .cargo/config
COPY src /opt/tarpaulin/src
RUN cd /opt/tarpaulin/ && \
cargo install --locked --path . && \
rm -rf /opt/tarpaulin/ && \
rm -rf /usr/local/cargo/registry/
FROM rustlang/rust:nightly
COPY --from=builder /usr/local/cargo/bin/cargo-tarpaulin /usr/local/cargo/bin/cargo-tarpaulin
WORKDIR /volume
CMD cargo build && cargo tarpaulin