Docker UP

dup.sh

#!/bin/bash

function print_help_dup() {
  echo "  usage:"
  echo "    dup [-i|--image] (options)"
  echo
  echo "    -i|--images     required    The name of the docker image you to load into your container"
  echo "                                dup -i node"
  echo "    -cmd|--command  optional    Provide a different command to run"
  echo "                                default: /bin/bash"
  echo "                                dup -i -nt node"
  echo "    -nt|--no-term   optional    Provide if no terminal should be opened"
  echo "                                default: false"
  echo "                                dup -i -nt true node"
  echo "    -p|--ports      optional    Provide the ports to be forwarded"
  echo "                                default: empty"
  echo "                                dup -i -p 9000:9000 node"
  echo "    -v|--volume     optional    Volume to be mounted"
  echo "                                default: $(pwd):/usr/src"
  echo "                                dup -i -v $(pwd)/target:/usr/src/target node"
  echo "    -w|--workdir    optional    Runs the command at the specified directory in the container"
  echo "                                default: /usr/src"
  echo "                                dup -i -w /usr/src/target node"
  echo
  echo "  examples:"
  echo "    # runs node in a container"
  echo "    dup -i node"
  echo "    # mounts the current dir under /usr/src/app"
  echo "    dup -i node -w /usr/src/app"
  echo "    # links the port range 9000 till 10000 from the container to the host"
  echo "    dup -i node -p 9000-10000:9000-10000"
}

function value_or() {
  if [ -z ${1+x} ];
    then
      echo $2
    else
      echo $1
  fi
}

function set_default_params() {
  COMMAND=/bin/bash
  INTERACTIVE=-it
  VOLUME="-v $(pwd):/usr/src"
  WORKDIR="-w /usr/src"
}

function dup() {
  # If no arguments are provided display the `help` log
  HELP=TRUE
  VOLUMES=
  PORTS=

  set_default_params

  while [[ $# -gt 1 ]]
  do
  key="$1"
  HELP=FALSE

  case $key in
      -cmd|--command)
      COMMAND="$2"
      shift # past argument
      ;;
      -i|--image)
      IMAGE="$2"
      shift # past argument
      ;;
      -nt|--no-term)
      INTERACTIVE=
      shift # past argument
      ;;
      -p|--ports)
      PORTS="$PORTS -p $2"
      shift # past argument
      ;;
      -v|--volume)
      VOLUMES="$VOLUMES -v $2"
      shift # past argument
      ;;
      -w|--workdir)
      VOLUMES="$VOLUMES -v $(pwd):$2"
      WORKDIR="-w $2"
      shift # past argument
      ;;
      *)
            # unknown option
      ;;
  esac
  shift # past argument or value
  done

  if [ $HELP = "TRUE" ];
    then
      print_help_dup
    else
      # echo multi vars so that the VARS are not seen as one param
      RESULT="docker run $INTERACTIVE $(echo $(value_or $VOLUMES $VOLUME)) $(echo $WORKDIR) $(echo $PORTS) $IMAGE $COMMAND"
      echo "Running:"
      echo "  $RESULT"

      $(echo $RESULT)
  fi
}