# =======================================
# ===== Build image for the backend =====
# =======================================
FROM golang:1.16.5-alpine AS builder-backend

ARG BUILD_TAG
ARG BUILD_COMMIT
ARG CC_VERSION="v15"

WORKDIR /go/src/app

COPY / ./

# CGO_ENABLED=1 and gcc cross-compiler is required for building go-sqlite3
RUN \
apk --no-cache add curl && \
curl -Lfs -o /tmp/gcc-9.2.0-arm-linux-musleabihf.tar.xz "https://github.com/just-containers/musl-cross-make/releases/download/${CC_VERSION}/gcc-9.2.0-arm-linux-musleabihf.tar.xz" && \
tar xf /tmp/gcc-9.2.0-arm-linux-musleabihf.tar.xz -C / && \
go mod download && \
mv public_html internal/server/public_html && \
echo "Write tag ${BUILD_TAG} and commit ${BUILD_COMMIT} in binary." && \
sed -i "s/__BUILD_TAG__/${BUILD_TAG}/" cmd/authelia/constants.go && \
sed -i "s/__BUILD_COMMIT__/${BUILD_COMMIT}/" cmd/authelia/constants.go && \
GOOS=linux GOARCH=arm CGO_ENABLED=1 CC=arm-linux-musleabihf-gcc CGO_LDFLAGS=-fuse-ld=bfd go build -tags netgo -ldflags '-s -w -linkmode external -extldflags -static' -trimpath -o authelia ./cmd/authelia

# ===================================
# ===== Authelia official image =====
# ===================================
FROM arm32v7/alpine:3.13.5

WORKDIR /app

COPY ./qemu-arm-static /usr/bin/qemu-arm-static

RUN apk --no-cache add ca-certificates su-exec tzdata && \
    rm /usr/bin/qemu-arm-static

COPY --from=builder-backend /go/src/app/authelia /go/src/app/LICENSE /go/src/app/entrypoint.sh /go/src/app/healthcheck.sh ./

EXPOSE 9091

VOLUME /config

# Set environment variables
ENV PATH="/app:${PATH}" \
    PUID=0 \
    PGID=0

ENTRYPOINT ["/app/entrypoint.sh"]
CMD ["--config", "/config/configuration.yml"]
HEALTHCHECK --interval=30s --timeout=3s --start-period=1m CMD /app/healthcheck.sh