Php: `docker-php-ext-install` should be quiet unless there are errors / warnings

[k0pernikus]

Given the dockerfile:

FROM php:7-apache
RUN apt-get -qq update && apt-get -qq install libxml++2.6-dev > /dev/null
RUN docker-php-ext-install soap
COPY ./ /var/www/html

Running docker-php-ext-install soap spams the console. I want it to be as quite as possible and only to show errors and warnings.

Hence, I directed the output to /dev/null

RUN docker-php-ext-install soap > /dev/null

yet this also dumps debug information:

Step 3 : RUN docker-php-ext-install soap > /dev/null
 ---> Running in 5a05f4e3576d
+ cd /usr/src/php/ext/soap
+ phpize
+ ./configure
 ---> f506393f0161

I do want to keep the error and warning messages if they occure, yet those are none.

It would be nice to have quiet flag for which does that out of the box, or that the all messages that are not representing at least a warning should be written to stdout.

[yosifkit]

Oh, yeah a silent mode would be nice or preferably a verbose mode that turns it on. Or we could just remove the set -x in the configure script

[mathroc]

with bash we could set BASH_XTRACEFD=1 to make the trace output on stdout but I couldn't find the equivalent (if it exists) for sh

[Rubinum]

this feature would be very nice.

[tianon]

Sorry for the delay!

I'd be +1 on removing the set -x from docker-php-ext-configure. :+1:

[J0WI]

It seems not to be that simple. I just created #555 but I still get a huge output. I also tried to remove the RUN set -x; in the Dockerfiles with no effect.

[tianon]

Yes, removing set -x doesn't make these scripts quiet, but it prevents us from adding additional output, so for many extensions, doing something like RUN docker-php-ext-install foobar > /dev/null will be completely silent (maybe a few compiler warnings) unless there's an actual build failure (and then it'll include the error).

[cjaoude]

Thanks guys. Way too chatty.

# add silently...
RUN set -x
RUN docker-php-ext-install foo > /dev/null