dow.sh

#!/bin/sh

#
## Author: Sébastien Demanou
## Source: https://gitlab.com/snippets/1730907.js

binary=$(basename $0)

usage() {
  echo "$binary - Docker Wrapper SH"
  echo ""
  echo "Usage: $binary [OPTIONS] COMMAND"
  echo ""
  echo "  Commands:"
  echo "    start                     Start the container"
  echo "    stop                      Stop the container"
  echo "    restart                   Restart the container"
  echo "    delete                    Delete the container"
  echo "    list                      List containers"
  echo ""
  echo "    NOTE: By default, commands are launched in debug environment."
  echo "          To run a command in the release environment, add the '-r'"
  echo "          option as prefix: $binary -r make bin"
  echo ""
  echo "  Options:"
  echo "    --help                    Print usage"
  echo "    --path string             Set the Dockerfile's path"
  echo "    -d, --dns list            Set custom DNS servers. Default: $DNS"
  echo "    -i, --image string        Set the image name. Default: $IMAGE"
  echo "    -h, --hostname string     Set the container hostname"
  echo "    -n, --name string         Assign a name to the container"
  echo "    -p, --project string      Set the project name"
  echo "    -r, --release             Run command to the release environment"
  echo "    -u, --user string         Container's username. Default: \$USER"
  echo "    -w, --workdir string      Working directory inside the container. Default \$(pwd)"
  echo ""
  echo "  Start the debug environment:"
  echo "    $ $binary start"
  echo ""
  echo "  Start the release environment:"
  echo "    $ $binary -r start"
  echo ""
  echo "  Launch the container's bash:"
  echo "    $ $binary bash"
  echo ""
  echo "  Init (done once):"
  echo "    $ $binary make clean"
  echo "    $ $binary make external"
  echo ""
  echo "  Build in debug mode:"
  echo "    $ $binary make bin"
  echo ""
  echo "  Build in release mode:"
  echo "    $ $binary -r make bin"
  echo ""
  echo "  Package sources:"
  echo "    $ $binary make source"
  echo ""
  echo "  Package binaries:"
  echo "    $ $binary make pkg"
  echo ""
}

homedir() {
  echo "/home/$DUSER"
}

image_exist() {
  res=$(docker images -q $IMAGE 2> /dev/null)

  if [ "$res" = '' ]; then
    echo 'false'
  else
    echo 'true'
  fi
}

image_build() {
  echo -n "Building the Docker image $IMAGE... "

  docker build -t $IMAGE $DOCKER_PATH \
    && echo "done"
}

container_create() {
  echo -n "Creating container $(container_name)... "

  docker run -d -it \
    --name $(container_name) \
    --dns=$DNS \
    --hostname $(container_hostname) \
    --env DEBUG=$DEBUG_VALUE \
    --volume $(pwd):$(container_workdir) \
    --workdir $(container_workdir) $IMAGE > /dev/null \
    && echo "done"
}

container_create_user() {
  echo -n "Creating user $DUSER... "

  docker exec $(container_name) useradd $DUSER
  docker cp $DOCKER_PATH/.bash_profile $(container_name):$(homedir)/
  docker cp $DOCKER_PATH/.bashrc $(container_name):$(homedir)/
  docker cp $DOCKER_PATH/.inputrc $(container_name):$(homedir)/

  echo "done"
}

container_start() {
  echo -n "Starting $(container_name)... "

  docker start $(container_name) > /dev/null \
    && echo "done"
}

container_exist() {
  res=$(docker inspect -f {{.Id}} $(container_name) 2> /dev/null)

  if [ "$res" = '' ]; then
    echo 'false'
  else
    echo 'true'
  fi
}

container_is_stopped() {
  res=$(docker inspect -f {{.State.Status}} $(container_name) 2> /dev/null)

  if [ "$res" = 'exited' ]; then
    echo 'true'
  else
    echo 'false'
  fi
}

container_init() {
  if [ $(image_exist) = 'false' ]; then
    image_build
  fi

  if [ $(container_exist) = 'false' ]; then
    container_create && container_create_user 2> /dev/null
  else
    if [ $(container_is_stopped) = 'true' ]; then
      container_start
    fi
  fi
}

container_stop() {
  if [ $(container_is_stopped) = 'false' ]; then
    echo -n "Stopping $(container_name)... "

    docker stop $(container_name) > /dev/null \
      && echo "done"
  fi
}

container_rm() {
  echo -n "Deleting $(container_name)... "

  docker rm $(container_name) > /dev/null \
    && echo "done"
}

container_name() {
  if [ "$CONTAINER_NAME" = '' ]; then
    echo "$DUSER-$PROJECT-$MODE"
  else
    echo $CONTAINER_NAME
  fi
}

container_hostname() {
  if [ "$HOSTNAME" = '' ]; then
    container_name
  else
    echo $HOSTNAME
  fi
}

container_workdir() {
  echo "$(homedir)/$PROJECT"
}

display_containers() {
  docker ps -a
}

docker_exec() {
  docker exec -it --user $DUSER $(container_name) $@
}

DOCKER_PATH="docker-files"
IMAGE="centos:mq"
MODE="debug"
DEBUG_VALUE="true"
pwd=$(pwd)
PROJECT=$(basename $pwd)
CONTAINER_NAME=""
HOSTNAME=""
DUSER=$USER
DNS="10.55.35.248"

while [ "$1" != "" ]; do
  case $1 in
    --path )
      shift
      DOCKER_PATH=$1
      shift
      ;;
    -d | --dns )
      shift
      DNS=$1
      shift
      ;;
    -h | --hostname )
      shift
      HOSTNAME=$1
      shift
      ;;
    -i | --image )
      shift
      IMAGE=$1
      shift
      ;;
    -n | --name )
      shift
      CONTAINER_NAME=$1
      shift
      ;;
    -p | --project )
      shift
      PROJECT=$1
      shift
      ;;
    -r | --release )
      shift
      MODE="release"
      DEBUG_VALUE="false"
      ;;
    -u | --user )
      shift
      DUSER=$1
      shift
      ;;
    start )
      container_init
      exit
      ;;
    stop )
      if [ $(container_is_stopped) = 'false' ]; then
        container_stop
      fi
      exit
      ;;
    restart )
      if [ $(container_is_stopped) = 'false' ]; then
        container_stop && container_init
      else
        container_init
      fi
      exit
      ;;
    list )
      display_containers
      exit
      ;;
    delete )
      if [ $(container_is_stopped) = 'true' ]; then
        container_rm
      fi
      exit
      ;;
    --help )
      usage
      exit
      ;;
    * )
      docker_exec $@
      exit
  esac
done

usage
exit 1