FROM --platform=$BUILDPLATFORM ghcr.io/blackdex/rust-musl:x86_64-musl-stable AS build_amd64
FROM --platform=$BUILDPLATFORM ghcr.io/blackdex/rust-musl:aarch64-musl-stable AS build_arm64

# Build image
FROM --platform=$BUILDPLATFORM build_${TARGETARCH} AS build

ARG TARGETARCH
ARG TARGETVARIANT
ARG TARGETPLATFORM

RUN echo "export CARGO_TARGET=${RUST_MUSL_CROSS_TARGET}" > /env-cargo

WORKDIR /usr/src

# Create blank project
RUN cargo new homepage

WORKDIR /usr/src/homepage

RUN source /env-cargo && \
	rustup target add "${CARGO_TARGET}"

COPY Cargo.* ./

# Dummy build to cache dependencies
RUN source /env-cargo && \
	cargo build --release --target "${CARGO_TARGET}"

RUN curl -Lo tailwindcss https://github.com/tailwindlabs/tailwindcss/releases/latest/download/tailwindcss-linux-x64 && \
	chmod +x tailwindcss

COPY src ./src

COPY config.toml ./config.toml

# Build the actual app
RUN touch src/main.rs && \
	source /env-cargo && \
	cargo install --path . --target "${CARGO_TARGET}"

# Required for Tailwind to know what classes are used
COPY templates ./templates

COPY tailwind.* ./

RUN ./tailwindcss -i tailwind.css -o index.css --minify



# Runtime image
FROM docker.io/alpine:latest

WORKDIR /etc/homepage

ARG GID=8686
ARG UID=8686

RUN addgroup -g ${GID} homepage && \
	adduser -u ${UID} -D -H -G homepage homepage

USER homepage:homepage

EXPOSE 8686

COPY --from=build /root/.cargo/bin/homepage /usr/local/bin/homepage

COPY templates ./templates

COPY assets ./assets

# Copy CSS generated by Tailwind
COPY --from=build /usr/src/homepage/index.css assets/

ENTRYPOINT ["homepage"]