Dependency on zip extension

[asgrim]

Chicken/egg raises its head when installing for example in a Dockerfile; for example, given the following:

FROM php:8.4-cli

COPY --from=ghcr.io/php/pie:bin /pie /usr/bin/pie

RUN pie install xdebug/xdebug

It would be useful if this worked out the box, but it does not, as Box correctly identifies that zip ext is missing when you try to build it, docker build --file test2.Dockerfile . for example:

 > [stage-0 3/3] RUN pie install xdebug/xdebug:                                                                                             
0.204                                                                                                                                       
0.204 Box Requirements Checker                                                                                                              
0.204 ========================
0.204 
0.204 > Using PHP 8.4.2
0.204 > PHP is not using any php.ini file.
0.204 
0.204 > Checking Box requirements:
0.204   ...E.
0.204 
0.204                                                                                 
0.204  [ERROR] Your system is not ready to run the application.                       
0.204                                                                                 
0.204 
0.204 Fix the following mandatory requirements:
0.204 =========================================
0.204 
0.204  * This application requires the extension "zip". You either need to enable it
0.204    or request the application to be shipped with a polyfill for this extension.
0.204 
------
test2.Dockerfile:5
--------------------
   3 |     COPY --from=ghcr.io/php/pie:bin /pie /usr/bin/pie
   4 |     
   5 | >>> RUN pie install xdebug/xdebug
   6 |     
--------------------
ERROR: failed to solve: process "/bin/sh -c pie install xdebug/xdebug" did not complete successfully: exit code: 1

[TimWolla]

see #122 (comment)

[asgrim]

ext-zip is not really a requirement here at all; in composer it tries to use the system unzip binary first (because it keeps things like permissions etc.), and then falls back to using \ZipArchive. If nothing is available, it tries to use git anyway. Practically, this means the same issue exists for something like COPY --from=composer:latest /usr/bin/composer /usr/local/bin/composer.

I suppose, practically PIE should remove ext-zip as a requirement, then the recommended install should be just:

FROM php:8.4-cli

RUN apt-get -y update \
    && apt-get install -y --no-install-recommends unzip \
    && rm -rf /var/lib/apt/lists/*

COPY --from=ghcr.io/php/pie:bin /pie /usr/bin/pie

RUN pie install xdebug/xdebug

[TimWolla]

then the recommended install should be just:

The unzipper is in unzip (which is just a recommends for zip and thus would not be installed for your example. My full recommended (but untested) "best-practice" command line would be:

RUN export DEBIAN_FRONTEND="noninteractive"; \
    set -eux; \
    apt-get update; \
    apt-get install -y --no-install-recommends \
        unzip \
    ; \
    rm -rf /var/lib/apt/lists/*;