know the syntax of install-php-extensions

[rino1]

+ cat Dockerfile
FROM php:cli

ADD \
    --chmod=0755 \
    https://github.com/mlocati/docker-php-extension-installer/releases/latest/download/install-php-extensions \
    /usr/local/bin/

RUN install-php-extensions --help



+ docker build -t test .
...bla...bla...
0.440 Unrecognized option: --help

So what?
If I want to know the syntax of install-php-extensions how should I do?

[mlocati]

There's no option: it just accepts a list of extensions to be installed, and supports a few environment variables (as described in the readme)

[rino1]

To immediately understand the syntax (without going around the world), like the vast more of the commands, at least the --help option should be there

install-php-extensions --help
Usage:
     install-php-extensions EXTENSIONS

[mlocati]

Yes, it'd be nice.