Boxfile

def getenv_or_die e
  v = getenv(e)
  raise "Environment variable \"#{e}\" is not set" if v.empty?
  return v
end

def create_user_and_group
  run 'addgroup -g ${SERVICE_GID} ${SERVICE_GROUP}'
  run 'adduser -g "${SERVICE_NAME} user" -D -H -G ${SERVICE_GROUP} -s /sbin/nologin -u ${SERVICE_UID} ${SERVICE_USER}'
end

def configure_java
  run 'apk add --no-progress --update libcap'

  run 'mkdir /lib64'
  run 'ln -s /usr/lib/jvm/java-1.8-openjdk/jre/lib/amd64/server/libjvm.so /lib/libjvm.so'
  run 'ln -s /usr/lib/jvm/java-1.8-openjdk/lib/amd64/jli/libjli.so /lib/libjli.so'
  run 'setcap "cap_net_bind_service=+ep" $(readlink -f $(which java))'

  copy 'java.sh', '/usr/local/bin/java.sh'
  run 'chmod +x /usr/local/bin/java.sh'
end

service_env = {
  SERVICE_USER: 'myuser',
  SERVICE_UID: '10001',
  SERVICE_GROUP: 'mygroup',
  SERVICE_GID: '10001',
}

['jdk', 'jre'].each do |j|

  from "openjdk:8u131-#{j}-alpine"

  commit = getenv_or_die('TRAVIS_COMMIT')

  image_labels = {
    msd_java_build_date: getenv_or_die('BUILD_DATE'),
    msd_java_build_version: getenv_or_die('BUILD_VERSION'),
    msd_java_build_commit: commit,
  }

  env service_env

  create_user_and_group

  configure_java

  flatten
  label image_labels

  image_name = "#{getenv_or_die('IMAGE_ORG')}/msd-java:#{j}-"
  tags = [commit]

  if !getenv('TRAVIS_BRANCH').empty? && getenv('TRAVIS_PULL_REQUEST') == "false"
    tags << "#{getenv('TRAVIS_BRANCH')}-#{commit[0..8]}"
  end

  tags << 'latest' unless getenv('TRAVIS_TAG').empty?

  tags.each { |t| tag "#{image_name}#{t}" }
end