Using docker for building a gradle project with alternative JDKs

docker.gradle.sh

#!/bin/sh
# https://gist.github.com/onacit/036c93befff929a1f43b7603aa0b65bb
if [ $# -lt 3 ]; then
  echo "Usage: $0 <tag> <tasks...>, e.g. $0 6.0.1-jdk11 -Pprofile=local clean build"
  echo "See https://hub.docker.com/_/gradle for available tags"
  exit 1
fi
tag="$1"
shift
name=$(basename "$PWD")
docker run -it --rm -u gradle \
  --name "$name" \
  -v gradle_cache:/home/gradle/.gradle \
  -v "$(pwd)":/usr/src/myproject \
  -w /usr/src/myproject \
  gradle:"$tag" gradle "$@"