Enables command deligation to Docker images for a specific repo or directory.

docker_passthru.bash.inc

# https://gist.github.com/erichiggins/a8bcd07295597d91dea7/
# version: 0.1.0
# author: Eric Higgins <erichiggins@gmail.com>
#
# Installation:
#
# 1) Copy this file into your repo's directory.
#    cp docker_passthru.bash.inc ~/src/myrepo/
# 2) Add the following to your ~/.bash_profile to include this script.
#     source ~/src/myrepo/docker_passthru.bash.inc
# 3) Modify as needed for the commands you want to support and your Docker images (See below).
#
# Usage:
#
# 1) Enter your repo working directory.
#     cd ~/src/myrepo/
# 2) Run commands as you normally would.
#     python test.py
#     python serve.py
#     gulp build
#     gulp test
#     gulp serve


# Uncomment the command aliases you want to use.
activate() {
  alias python=_python
# alias ruby=_ruby
# alias rake=_rake
# alias gulp=_gulp
# alias grunt=_grunt
# alias node=_node
# alias npm=_npm
}

deactivate() {
  unalias python ruby rake gulp grunt node npm &> /dev/null
}

# Watches for directory changes.
cd() { builtin cd "$@" && chpwd; }

# Path of this directory.
export CODE_PATH=`pwd -P`

# Modify the following with arguments needed for running python commands in a Docker image.
_python() {
  (set -x; docker run -d -a stdout -a stderr --rm YOURPYTHONIMAGE python "$@")
}
_ruby() {
  (set -x; ruby "$@")
}
_rake() {
  (set -x; rake "$@")
}
_gulp() {
  (set -x; docker run -d -a stdout -a stderr --rm YOUR_GULP_IMAGE gulp "$@")
}
_grunt() {
  (set -x; grunt "$@")
}
_node() {
  (set -x; node "$@")
}
_npm() {
  (set -x; npm "$@")
}


# Run `activate` when inside of `CODE_PATH`, else run `deactivate`.
chpwd () {
  case $PWD in
    $CODE_PATH|$CODE_PATH/*)
      activate
      ;;
    *)
      deactivate
      ;;
  esac
}

# Run on init.
chpwd

Open questions:

• How would something like gulp watch work?
• If you change requirements.txt or package.json, how will the Docker image know to pick it up?
• How are Docker images managed (new versions added, deployed)?