# This article showed me everything I needed to get this running
# https://dev.to/vladkens/fast-multi-arch-docker-build-for-rust-projects-an1
FROM --platform=$BUILDPLATFORM rust:1.83-alpine3.21 AS chef

WORKDIR /app

ENV PKGCONFIG_SYSROOTDIR=/

RUN apk update && \
    apk add --no-cache build-base musl-dev openssl-dev zig && \
    cargo install --locked cargo-zigbuild cargo-chef@0.1.68 && \
    rustup target add x86_64-unknown-linux-musl aarch64-unknown-linux-musl


FROM chef AS planner

COPY . .

RUN cargo chef prepare --recipe-path recipe.json


FROM chef AS builder

# Build dumb-init
ARG DI_VER=1.2.5

RUN mkdir -p /app/linux/arm64 /app/linux/amd64 && \
    wget -O - "https://github.com/Yelp/dumb-init/archive/refs/tags/v${DI_VER}.tar.gz" | tar -xzf - && \
    cd "dumb-init-${DI_VER}" && \
    make CC='zig cc -target x86_64-linux-musl' SHELL=/bin/sh && \
    ls && \
    mv dumb-init /app/linux/amd64/dumb-init && \
    make CC='zig cc -target aarch64-linux-musl' SHELL=/bin/sh && \
    mv dumb-init /app/linux/arm64/dumb-init && \
    cd ..

COPY --from=planner /app/recipe.json recipe.json

RUN cargo chef cook \
    --recipe-path recipe.json \
    --release --zigbuild \
    --target x86_64-unknown-linux-musl \
    --target aarch64-unknown-linux-musl

COPY . .

RUN cargo zigbuild \
    --release \
    --target x86_64-unknown-linux-musl \
    --target aarch64-unknown-linux-musl && \
    cp target/aarch64-unknown-linux-musl/release/calathea /app/linux/arm64/calathea && \
    cp target/x86_64-unknown-linux-musl/release/calathea /app/linux/amd64/calathea


FROM alpine:3.21

ARG TARGETPLATFORM

COPY --from=builder /app/${TARGETPLATFORM}/calathea /app/calathea
COPY --from=builder /app/${TARGETPLATFORM}/dumb-init /app/dumb-init
COPY templates /app/templates
COPY static /app/static

# Create a non-root user & make sure it can write to the data directory
RUN set -x && \
	adduser -u 82 -D -S -G www-data www-data && \
    mkdir /data && \
    chown -R www-data:www-data /data

WORKDIR /data

ENV TEMPLATES_DIR=/app/templates \
    STATIC_DIR=/app/static \
    DATA_DIR=/data

USER www-data:www-data

ENTRYPOINT [ "/app/dumb-init", "--" ]
CMD [ "/app/calathea", "serve", "0.0.0.0", "8000" ]