Docker image tools¶

docker-service¶

For enabling or disabling services run docker-service enable or docker-service disable inside your Dockerfile:

RUN docker-service enable ssh

This task will also trigger an auto installation if the daemon is not installed.

Available services are specified inside /opt/docker/etc/supervisor.d/.

Common services are:

cron
dnsmasq
postfix
ssh
syslog

docker-cronjob¶

For adding cronjobs the docker-cronjob script can be used in your Dockerfile:

RUN docker-cronjob '* * * * * application /app/cron.php`

Because this comand is run in shell mode make sure you add appropriate quotes to disable wildcard matching.

docker-php-setting¶

Only available on php images!

This scripts sets php.ini setting globaly:

RUN docker-php-setting memory_limit 1G

RUN docker-php-setting --raw error_reporting 'E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED'

docker-provision¶

The docker-provision script crontols the ansible provision system. See provision for more details.

(Will be replaced in future)

go-replace¶

Simple but powerfull search&replace and template processing tool for manipulating files inside Docker:

# normal search&replace
go-replace -s VIRTUAL_HOST -r "$VIRTUAL_HOST" daemon.conf

# or with template
go-replace --mode=template daemon.conf.tmpl:daemon.conf

For more informations see documentation inside go-replace repository.