#!/bin/bash
set -e

usage() {
cat &2
            exit
            ;;
        *)            
            break
    esac

    shift
done

BUILD_ARGS+=" --build-arg GIT_COMMIT=$(git rev-parse HEAD)"
BUILD_ARGS+=" --build-arg BUILD_DATE=$(date '+%Y%m%d-%H%M%S')"

# Read build args from config.txt file.
SRCDIR=$(dirname "${BASH_SOURCE[0]}")
for l in `cat ${SRCDIR}/config.txt`; do
    BUILD_ARGS+=" --build-arg $l"
done

readonly CACHE_FLAG
readonly DOCKERFILE
readonly ACCELERATOR
readonly IMAGE_TAG
readonly BUILD_ARGS

DOCKERFILE_OUTDIR="${SRCDIR}/.generated"
mkdir -p $DOCKERFILE_OUTDIR
DOCKERFILE_PATH="$DOCKERFILE_OUTDIR/$DOCKERFILE"

# Generate Dockerfile from template.
echo "Generating Dockerfile from template..."
docker run --rm -v $PWD:/input:ro gcr.io/kaggle-images/go-renderizer:latest --ACCELERATOR=$ACCELERATOR /input/Dockerfile.tmpl > $DOCKERFILE_PATH
echo "==================== $DOCKERFILE START ===================="
cat $DOCKERFILE_PATH
echo "==================== $DOCKERFILE  END  ===================="

set -x
docker build --rm --pull $CACHE_FLAG -t "$IMAGE_TAG" -f "$DOCKERFILE_PATH" $BUILD_ARGS .