pfish-wrapper

#!/bin/sh

# pfish
# A wrapper script for invoking pfish with docker
# Put this script in $PATH as `pfish`
#
# Inspired by https://spin.atomicobject.com/2015/11/30/command-line-tools-docker/

PROGNAME="$(basename $0)"

VERSION="1.2.1"

# Helper functions for guards
error(){
  error_code=$1
  echo "ERROR: $2" >&2
  echo "($PROGNAME wrapper version: $VERSION, error code: $error_code )" &>2
  exit $1
}
check_cmd_in_path(){
  cmd=$1
  which $cmd > /dev/null 2>&1 || error 1 "$cmd not found!"
}

# Guards (checks for dependencies)
check_cmd_in_path docker
#check_cmd_in_path docker-machine
#docker-machine active > /dev/null 2>&1 || error 2 "No active docker-machine VM found."

# ensure a configuration directory
CONFIG_DIR=$HOME/.pfish
mkdir -p $CONFIG_DIR

if [ "$#" -eq 0 ]; then
  echo "Expected one or more arguments\nFor more details, run\n pfish --help" >&2
elif [ $1 = "update" ]; then
  echo "Updating pfish v.$VERSION (see: https://github.com/aquariumbio/pfish#updating)"
  exec docker pull "aquariumbio/pfish:$VERSION"
elif [ $1 = "version" ]; then
  echo "Pfish version " $VERSION
else
  # Set up mounted volumes, environment, and run containerized pfish script:
  # - use host network
  # - run interactively
  # - mount current working directory as working directory in container
  # - mount user .pfish directory as config directory in container
  # - set container working directory
  exec docker run \
    --net=host \
    --interactive --tty --rm \
    --volume "$PWD":/wd \
    --volume "$CONFIG_DIR:/script/config" \
    --workdir /wd \
    "aquariumbio/pfish:$VERSION" "$@"
fi