#!/usr/bin/env bash
set -euo pipefail

workdir="$PWD/repo"

rm -rf "$workdir"
mkdir -p "$workdir"

git init "$workdir"
cd "$workdir"

git remote add origin "https://${INPUT_GIT_USER}:${INPUT_GIT_TOKEN}@${INPUT_GIT_BASE_URL}/${INPUT_GIT_REPOSITORY}.git"
git fetch --depth=1 origin "${INPUT_GIT_SHA}"
git checkout --detach FETCH_HEAD

full_image="${INPUT_IMAGE_NAME}:${INPUT_IMAGE_TAG}"

docker build \
  -f "${INPUT_DOCKERFILE}" \
  -t "${full_image}" \
  "${INPUT_CONTEXT}"

if [ "${INPUT_PUSH}" = "true" ]; then
  echo "${INPUT_REGISTRY_TOKEN}" | docker login "${INPUT_REGISTRY}" -u "${INPUT_REGISTRY_USER}" --password-stdin
  docker tag "${full_image}" "${INPUT_REGISTRY}/${full_image}"
  docker push "${INPUT_REGISTRY}/${full_image}"
fi