Dockerfile.backend-container.ubi

# xx is helper for cross-compilation
FROM --platform=$BUILDPLATFORM tonistiigi/xx:1.3.0 AS xx

FROM --platform=$BUILDPLATFORM golang:1.22-alpine3.19 AS builder
RUN apk add build-base
COPY . /usr/src/myapp
WORKDIR /usr/src/myapp
COPY --link --from=xx / /
ARG TARGETOS
ARG TARGETARCH
ENV CGO_ENABLED=1

RUN apk add clang lld
RUN make vendor
RUN xx-go --wrap
RUN xx-apk add musl-dev gcc
RUN if [ "$TARGETARCH" = "arm64" ]; then CC=aarch64-alpine-linux-musl; fi && \
    go build --tags 'sqlite_json' -mod=vendor -ldflags '-s -w -linkmode external -extldflags "-static"' -o bin/tornjak-backend ./cmd/agent/main.go

FROM registry.access.redhat.com/ubi8-micro:latest AS runtime
RUN mkdir -p /opt/tornjak

WORKDIR /opt/tornjak
ENTRYPOINT ["/opt/tornjak/run_backend.sh"]

# Add init
COPY scripts/run_backend.sh run_backend.sh
COPY --from=builder /usr/src/myapp/bin/tornjak-backend tornjak-backend

# add a version link to the image description
ARG version
ARG github_sha
LABEL org.opencontainers.image.description="Tornjak backend ($version) UBI based image: https://github.com/spiffe/tornjak/releases/tag/$version" \
      org.opencontainers.image.source="https://github.com/spiffe/tornjak" \
      org.opencontainers.image.documentation="https://github.com/spiffe/tornjak/tree/main/docs"
# replace UBI labels
LABEL architecture="amd64" \
      build-date="" \
      description="Tornjak Backend" \ 
      io.k8s.description="Tornjak Backend" \
      io.k8s.display-name="tornjak-backend" \
      maintainer="" \
      name="spiffe/tornjak-backend" \
      release="$version" \
      summary="Tornjak backend UBI image" \
      url="" \
      vcs-ref="" \
      vcs-type="" \
      vendor="" \
      version="$version"

# create env. variables with the build details
ENV VERSION=$version
ENV GITHUB_SHA=$github_sha