pydocker

Easy generator Dockerfile for humans

Let's use power of python for generate dockerfile!

Advantages:
    - all features from python: variables, multiline strings, code reuse.
    - keep all your code in one file [bash, python, conf, ...]
    - generate many docker files from one template [testing, production, ]
    - generate sequence [Dockerfile.debian => Dockerfile.python => Dockefile.yourapp, ...]
    - or if you not expert in sed, awk - you can use python for modify conf files : )

easy code, easy costomize

Install

# sudo apt-get install python-setuptools && sudo easy_install pip
pip install -U pydocker

Using

# Dockerfile.py

import sys
import logging
import pydocker  # github.com/jen-soft/pydocker

logging.getLogger('').setLevel(logging.INFO)
logging.root.addHandler(logging.StreamHandler(sys.stdout))


class DockerFile(pydocker.DockerFile):
    """   add here your custom features   """


d = DockerFile(base_img='debian:8.2', name='jen-soft/custom-debian:8.2')

d.RUN_bash_script('/opt/set_repo.sh', r'''

cp /etc/apt/sources.list /etc/apt/sources.list.copy

cat >/etc/apt/sources.list <<EOL
deb     http://security.debian.org/ jessie/updates main
deb-src http://security.debian.org/ jessie/updates main
deb     http://ftp.nl.debian.org/debian/ jessie main
deb-src http://ftp.nl.debian.org/debian/ jessie main
deb     http://ftp.nl.debian.org/debian/ testing main
EOL

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 04EE7237B7D453EC
apt-get clean && apt-get update

''')

d.EXPOSE = 80
d.WORKDIR = '/opt'

# d.ENTRYPOINT = ["/opt/www-data/entrypoint.sh"]
d.CMD = ["python", "--version"]

d.build_img()

# >_ console:

python3 Dockerfile.py
docker images

Alternative uage:

• install from repo (without pip)

  F=$(python -c "import site; print(site.getsitepackages()[0]+'/pydocker.py')")
  sudo wget -v -N raw.githubusercontent.com/jen-soft/pydocker/master/pydocker.py -O $F
  

• without any installation:

  try: from urllib.request import urlopen         # python-3
  except ImportError: from urllib import urlopen  # python-2
  exec(urlopen('https://raw.githubusercontent.com/jen-soft/pydocker/master/pydocker.py').read())
  #
  d = DockerFile(base_img='debian:8.2', name='jen-soft/custom-debian:8.2')
  # ...

  • Helpful if you need just build img

• not required installation

  #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  try:
      from pydocker import DockerFile  # pip install -U pydocker
  except ImportError:
      try:
          from urllib.request import urlopen         # python-3
      except ImportError:
          from urllib import urlopen  # python-2
      #
      exec(urlopen('https://raw.githubusercontent.com/jen-soft/pydocker/master/pydocker.py').read())
  #
  import sys
  import logging
  
  logging.getLogger('').setLevel(logging.INFO)
  logging.root.addHandler(logging.StreamHandler(sys.stdout))
  
  
  class MyDockerFile(DockerFile):
      """   add here your custom features   """
  #
  
  
  d = MyDockerFile(base_img='debian:8.2', name='jen-soft/debian:8.2')
  # ...

  • Helpful if you need share your Dockerfile.py

License

This work is dual-licensed under Apache License 2.0 and MIT License. You can choose between one of them if you use this work.