151 lines
4.9 KiB
Python
Executable File
151 lines
4.9 KiB
Python
Executable File
#!/usr/bin/env python3
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""" Dockerfile.py - generates and build dockerfiles
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Usage:
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Dockerfile.py [--hub_tag=<tag>] [--arch=<arch> ...] [-v] [-t] [--no-build | --no-generate] [--no-cache]
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Options:
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--no-build Skip building the docker images
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--no-cache Build without using any cache data
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--no-generate Skip generating Dockerfiles from template
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--hub_tag=<tag> What the Docker Hub Image should be tagged as [default: None]
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--arch=<arch> What Architecture(s) to build [default: amd64 armel armhf arm64]
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-v Print docker's command output [default: False]
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-t Print docker's build time [default: False]
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Examples:
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"""
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from docopt import docopt
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from jinja2 import Environment, FileSystemLoader
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from docopt import docopt
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import os
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import subprocess
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import sys
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THIS_DIR = os.path.dirname(os.path.abspath(__file__))
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base_vars = {
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'name': 'pihole/pihole',
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'maintainer' : 'adam@diginc.us',
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's6_version' : 'v1.22.1.0',
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}
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os_base_vars = {
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'php_env_config': '/etc/lighttpd/conf-enabled/15-fastcgi-php.conf',
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'php_error_log': '/var/log/lighttpd/error.log'
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}
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__version__ = None
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dot = os.path.abspath('.')
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with open('{}/VERSION'.format(dot), 'r') as v:
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raw_version = v.read().strip()
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__version__ = raw_version.replace('release/', 'release-')
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images = {
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__version__: [
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{
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'base': 'pihole/debian-base:latest',
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'arch': 'amd64',
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's6arch': 'amd64',
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},
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{
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'base': 'multiarch/debian-debootstrap:armel-stretch-slim',
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'arch': 'armel',
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's6arch': 'arm',
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},
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{
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'base': 'multiarch/debian-debootstrap:armhf-stretch-slim',
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'arch': 'armhf',
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's6arch' : 'arm',
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},
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{
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'base': 'multiarch/debian-debootstrap:arm64-stretch-slim',
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'arch': 'arm64',
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's6arch' : 'aarch64',
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}
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]
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}
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def generate_dockerfiles(args):
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if args['--no-generate']:
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print(" ::: Skipping Dockerfile generation")
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return
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for version, archs in images.items():
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for image in archs:
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if image['arch'] not in args['--arch']:
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continue
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s6arch = image['s6arch'] if image['s6arch'] else image['arch']
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merged_data = dict(
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list({ 'version': version }.items()) +
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list(base_vars.items()) +
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list(os_base_vars.items()) +
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list(image.items()) +
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list({ 's6arch': s6arch }.items())
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)
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j2_env = Environment(loader=FileSystemLoader(THIS_DIR),
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trim_blocks=True)
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template = j2_env.get_template('Dockerfile.template')
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dockerfile = 'Dockerfile_{}'.format(image['arch'])
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with open(dockerfile, 'w') as f:
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f.write(template.render(pihole=merged_data))
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def build_dockerfiles(args):
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if args['--no-build']:
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print(" ::: Skipping Dockerfile building")
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return
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for arch in args['--arch']:
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build('pihole', arch, args)
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def run_and_stream_command_output(command, args):
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print("Running", command)
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build_result = subprocess.Popen(command.split(), stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
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bufsize=1, universal_newlines=True)
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if args['-v']:
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while build_result.poll() is None:
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for line in build_result.stdout:
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print(line, end='')
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build_result.wait()
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if build_result.returncode != 0:
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print(" ::: Error running".format(command))
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print(build_result.stderr)
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def build(docker_repo, arch, args):
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dockerfile = 'Dockerfile_{}'.format(arch)
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repo_tag = '{}:{}_{}'.format(docker_repo, __version__, arch)
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cached_image = '{}/{}'.format('pihole', repo_tag)
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print(" ::: Building {}".format(repo_tag))
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time=''
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if args['-t']:
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time='time '
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no_cache = ''
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if args['--no-cache']:
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no_cache = '--no-cache'
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build_command = '{time}docker build {no_cache} --pull --cache-from="{cache},{create_tag}" -f {dockerfile} -t {create_tag} .'\
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.format(time=time, no_cache=no_cache, cache=cached_image, dockerfile=dockerfile, create_tag=repo_tag)
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print(" ::: Building {} into {}".format(dockerfile, repo_tag))
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run_and_stream_command_output(build_command, args)
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if args['-v']:
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print(build_command, '\n')
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if args['--hub_tag']:
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hub_tag_command = "{time}docker tag {create_tag} {hub_tag}"\
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.format(time=time, create_tag=repo_tag, hub_tag=args['--hub_tag'])
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print(" ::: Tagging {} into {}".format(repo_tag, args['--hub_tag']))
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run_and_stream_command_output(hub_tag_command, args)
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if __name__ == '__main__':
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args = docopt(__doc__, version='Dockerfile 1.1')
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if args['-v']:
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print(args)
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generate_dockerfiles(args)
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build_dockerfiles(args)
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