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Bicti, efficient startup script for within docker containers

Project description


Simple startup tool for docker containers.

bicti is intended as the entrypoint of a container,
and provides a few helpers for systems that may require several services
(for instance, fastcgi and nginx and cron and logrotate).

Its features include:

- Declarative list of supported commands
- Launch all demons or only a few ones
- Drop into a shell instead


bicti is written in Python; it supports all versions from 2.6 onwards.
It also relies on ``runit`` ( for daemon management.


In your dockerfile, add:

.. code-block:: sh
RUN apt-get -qqy install runit python
RUN wget "" -O /sbin/bicti
ADD ./bicti.ini /etc/bicti.ini
RUN /sbin/bicti --setup
ENTRYPOINT "/sbin/bicti"

This will:

1. Retrieve bicti and its dependencies
2. Load your ``bicti.ini`` configuration file (expected at ``/sbin/bicti``)
3. Setup all daemon startup scripts in ``/etc/runit``
4. Declare bicti as your entry point.


.. code-block:: sh

$ docker run my/image --help
usage: [--config CONFIG] [--root ROOT] [-h] [--setup]
[--shell [SHELL]] [--all]

Bicti, the docker inner setup.

positional arguments:
SERVICE Services to start (valid options: cron,uwsgi)

optional arguments:
--config CONFIG, -c CONFIG
Read configuration from CONFIG
--root ROOT Use paths relative to ROOT
-h, --help Show this help message and exit
--setup Setup the service files
--shell [SHELL] Drop to a shell (default=/bin/bash)
--all Start all services

Configuration file:

.. code-block:: ini

; Run before any service is started
setup = /sbin/my-image-setup
; Run once all services have been stopped
teardown = /sbin/my-image-cleanup

; One section per service
; Actual command to run
command = /usr/bin/cron
; Require another service to be started first
after = syslog

command = /usr/bin/uwsgi
; Command to run before starting the service
setup_command = mkdir /var/log/uwsgi
; Special uid/gid
uid = www-data
gid = www-data

Project details

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