.deliver-test.bash

#!/bin/bash

CONTEXT=$1
IMAGE=$2
TAG=`node -e 'process.stdout.write(require(process.argv[1]).version)' ./$CONTEXT/package.json`
CACHE_DIR="$HOME/.cache/docker/${IMAGE/\//_}"

DOCKERFILE=""
if [ ! -z "$3" ]; then
  DOCKERFILE="-f $3"
fi

docker load -i "$CACHE_DIR/latest.tar" || true
docker pull $IMAGE:$TAG

if [ $? == 0 ]; then
  echo "Image exists. Not going to do anything."
  exit 0
fi

docker build -t $IMAGE:$TAG --cache-from $IMAGE:latest-tag $CONTEXT $DOCKERFILE && \
docker tag $IMAGE:$TAG $IMAGE:latest-tag
EXIT_CODE=$?

if [ $EXIT_CODE != 0 ]; then
  echo >&2 "Docker build failed!"
  exit $EXIT_CODE
fi

docker push $IMAGE:latest-tag && \
docker push $IMAGE:$TAG
EXIT_CODE=$?

if [ $EXIT_CODE != 0 ]; then
  echo >&2 "Docker push failed!"
  exit $EXIT_CODE
fi

echo "Save cache $CACHE_DIR/latest.tar"
mkdir -p "$CACHE_DIR"
docker save $IMAGE:latest -o "$CACHE_DIR/latest.tar"