# we use thc for healthchecks
FROM codeberg.org/gigirassy/thc:latest AS thc

# alpine for static binaries
FROM rust:alpine AS build

# workdir, copy.
WORKDIR /src
COPY . .

# to make the binary as tiny as possible, we'll use the nightly toolchain so we can use panic=immediate-abort and remove debug/location stuff
RUN rustup component add rust-src --toolchain nightly

# build
RUN RUSTFLAGS="-Copt-level=z -Zfmt-debug=none -Zlocation-detail=none -Ctarget-feature=+crt-static" cargo +nightly install --path=. --root /tmp -Z build-std=std  -Z build-std-features="optimize_for_size"

# scratch runtime for security
FROM scratch

# "nobody" user for security
USER 65535:65535

# copy binary into path
COPY --from=build --chown=65535:65535 /tmp/bin/teletraan /teletraan
COPY --from=thc /thc /thc

# configure thc
ENV THC_PORT=3000 \
    THC_PATH=/

# data workdir. this allows using teletraan as the base for images easily via simply ``COPY --from=build /app/dist .``
WORKDIR /data

# expose
EXPOSE 3000

# to run it and thc. the cmd is left free so people can serve single page apps with the -s flag
ENTRYPOINT ["/teletraan"]
CMD [""]
HEALTHCHECK --interval=5s --timeout=5s --start-period=10s --retries=5 CMD ["/thc"]