# syntax=docker/dockerfile:1.4
# Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


# *NOTE* we have to limit our number of layers heres because in presubmits there
# is no overlay fs and we will run out of space quickly

################# BUILDER ######################
ARG BASE_IMAGE=unused
ARG BUILDER_IMAGE=unused
ARG BUILT_BUILDER_IMAGE=unused
ARG MINIMAL_BASE_BUILDER_IMAGE=unused
ARG VERSIONED_VARIANT
ARG AL_TAG
ARG COMPILER_VERSION=${VERSIONED_VARIANT}
ARG IS_COMPILER=false

################# DOWNLOAD ON GLIBC ######################
# Download in the minimal base builder image to allow sharing result across compiler
# and runtime images. We also build the cache into the runtime image
# which includes the cache data for this layer and along with COPY --link
# this also us to ensure this layer is always reusable across the runtime + compiler
# builds without relying on the buildkitd local cache
FROM ${MINIMAL_BASE_BUILDER_IMAGE} as golang-download

ARG OUTPUT_DEBUG_LOG

ARG COMPILER_FULL_VERSION
ARG COMPILER_VERSION
ARG TARGETARCH

# Copy scripts in every variant since we do not rebuild the base
# every time these scripts change. This ensures whenever a variant is
# built it has the latest scripts in the builder
COPY scripts/ /usr/bin

RUN set -x && \
    export OUTPUT_DEBUG_LOG=${OUTPUT_DEBUG_LOG} && \
    # build time deps    
    NEWROOT=/ install_binary /usr/bin/wget \
        /usr/bin/tar \
        /usr/bin/gzip && \    
    install_golang "${COMPILER_FULL_VERSION}" && \
    cleanup "golang-${COMPILER_VERSION}"


################# COPIED LAYER ######################
FROM ${BUILDER_IMAGE} as golang

ARG COMPILER_VERSION

COPY --link --from=golang-download /golang-${COMPILER_VERSION} /newroot


################# BASE WITH YUM PACKAGES ######################
# Install the base packages needed for node from yum
# this layer is is not cached to ensure latest yum packages are installed
FROM golang as builder-golang-base

ARG OUTPUT_DEBUG_LOG

RUN set -x && \    
    clean_install git-core && \
    cleanup "golang-base"

FROM builder-golang-base as builder

################# FINAL ######################
FROM ${BUILT_BUILDER_IMAGE} as built
FROM ${BASE_IMAGE} as final

ENV GOPATH /go
ENV GOENV "${GOPATH}/.config/go/env"
ENV GOCACHE "${GOPATH}/.cache/go-build"
ENV PATH="${GOPATH}/bin/:$PATH"

WORKDIR ${GOPATH}
COPY --from=built /newroot /