BusyBox cron container example

Dockerfile

FROM gliderlabs/alpine:3.3
COPY myawesomescript /bin/myawesomescript
COPY root /var/spool/cron/crontabs/root
RUN chmod +x /bin/myawesomescript
CMD crond -l 2 -f

myawesomescript

#!/bin/sh
echo "Hi Andy" >> /dev/stdout

root

*	*	*	*	*	/bin/myawesomescript

Lol wow. Wonder how many people's workflows are going to break because of this 😂

Lol wow. Wonder how many people's workflows are going to break because of this

Haha :) Should be pretty backward-compatible since the hidden files are still ignored (though were not in my originally proposed patch, but luckily we have peer-review :-)

But I assume lots of people's workflows are based on the fact that files with a . in the filename are not executed 😅 Whether they know that or not

But I assume lots of people's workflows are based on the fact that files with a . in the filename are not executed Whether they know that or not

Yes. And with the patch it works exactly like you say. Just that also file.sh gets executed now (despite the dot).

Yeah bud, file.sh is exactly what I was talking about

Yeah bud, file.sh is exactly what I was talking about

Do you really think people know file.sh will not be executed ? Moreover not executed on Alpine but executed on Debian ?
I'm unfortunately for me - and the time I spent - not part of these people.

Try crond --help:

/ # crond --help
BusyBox v1.24.2 (2016-06-22 17:51:28 GMT) multi-call binary.

Usage: crond -fbS -l N -d N -L LOGFILE -c DIR

    -f  Foreground
    -b  Background (default)
    -S  Log to syslog (default)
    -l N    Set log level. Most verbose:0, default:8
    -d N    Set log level, log to stderr
    -L FILE Log to FILE
    -c DIR  Cron dir. Default:/var/spool/cron/crontabs

I've been looking & this is the most information I can find about this...

for the crond -fbS -l N -d N -L LOGFILE -c DIR it says -l has options from 0 to at least 8 with 0 giving the most detail, it then has -d that maybe has the same scale, but is it -d=log to stderr? so, for example if I ran cron -fbS -l 2 -d 0 -L /var/log/cron.log would it log to the foreground, background, & syslog with level 2 & log to STDERR with verbose log (0) while logging what to /var/log/cron.log? Would it be the level set as -l?

Whoa... You mean this thread, my comment, spawned a patch upstream to BusyBox?! Niiiiiiice. Thanks @jsarenik !

@eduncan911 My pleasure :)