#docker-crontab

A crontab replacement for running periodical jobs in server.

Usage

First, you need to find out your current *nix system time zone, To get linux local time zone:

Ubuntu 12: cat /etc/timezone

CentOS 6.x: cat /etc/sysconfig/clock | sed -n 's/ZONE="\(.*\)"/\1/p'

CentOS 7.x: ls -l /etc/localtime | sed -n 's/.*\/zoneinfo\/\(.*\)/\1/p'

Develop

Build docker image using script in sh folder:

./sh/devcli.sh -b

you can change running python version by change the preceeding PYTHON_VER environemnt variable:

PYTHON_VER=3 ./sh/devcli.sh -b

default value, will build Python 3.5.x image.

PYTHON_VER=3.4 ./sh/devcli.sh -b

build image using Python 3.4.x

PYTHON_VER=2 ./sh/devcli.sh -b

build image using Python 2.7.x

Or just run with omitting the -b parameter to go into docker cli to play with it.

Prepeare for distribute or running as docker container

Make distributable image:

docker-compose build

You can also prepend the PYTHON_VER envrionment varaible just as in previous section, to build different images with the specified version of Python.

Run distributable image by following command:

docker run --name cron -e TZ=$TZ -e crontab_paths=/test_cron/test.crontab -e CIRCUS_LOG_LEVEL=debug -v `pwd`/src:/proj -v `pwd`/config:/conf -v /etc/localtime:/etc/localtime:ro -it docker-crontab bash