jpegtran_docker.sh

# :eyes: https://github.com/tgagor/docker-jpegtran
function jpegtran_docker {
  [ $(docker images jpegtran | wc -l) != 2 ] && return 1 # ahead of this, build jpegtran with https://github.com/tgagor/docker-jpegtran.git

  local file=$1
  [ -z $file ] && return 1

  local filedir=$(dirname ${file})
  [ ${filedir} = "." ] && filedir=$(pwd)

  local f=$(basename ${file})
  local mount_volumes=${filedir}:/tmp

  docker run -v ${mount_volumes} jpegtran jpegtran -copy all -debug -optimize -outfile "/tmp/${f}" "/tmp/${f}"
  return $?
}