Php: docker php7.2 not installing mcrypt

[Niko-La]

I am running wordpress:latest docker image (wp 4.9.1 ,php7.2)

For my payment gateway i need mcrypt

my dockerfile contains

RUN apt install libmcrypt-dev
RUN docker-php-ext-install -j$(nproc) mcrypt

or
RUN docker-php-ext-configure mcrypt
RUN docker-php-ext-install -j$(nproc) mcrypt

Both are not working

`

usage: /usr/local/bin/docker-php-ext-configure ext-name [configure flags]
ie: /usr/local/bin/docker-php-ext-configure gd --with-jpeg-dir=/usr/local/something

Possible values for ext-name:
bcmath bz2 calendar ctype curl dba dom enchant exif fileinfo filter ftp gd gettext gmp hash iconv imap interbase intl json ldap mbstring mysqli oci8 odbc opcache pcntl pdo pdo_dblib pdo_firebird pdo_mysql pdo_oci pdo_odbc pdo_pgsql pdo_sqlite pgsql phar posix pspell readline recode reflection session shmop simplexml snmp soap sockets sodium spl standard sysvmsg sysvsem sysvshm tidy tokenizer wddx xml xmlreader xmlrpc xmlwriter xsl zend_test zip

`

[cdtweb]

FYI

mcrypt has been deprecated in 7.1 and removed in 7.2 in favor of OpenSSL

[tianon]

Source: https://secure.php.net/manual/en/migration71.deprecated.php

[soullivaneuh]

mcrypt has been deprecated in 7.1 and removed in 7.2 in favor of OpenSSL

Is OpenSSL installed as default? Because I can't see it on the available extension to install.

[yosifkit]

@Soullivaneuh , It is already there:

$ docker run -it --rm php:7.2 php -m
[PHP Modules]
Core
ctype
curl
date
dom
fileinfo
filter
ftp
hash
iconv
json
libxml
mbstring
mysqlnd
openssl
pcre
PDO
pdo_sqlite
Phar
posix
readline
Reflection
session
SimpleXML
SPL
sqlite3
standard
tokenizer
xml
xmlreader
xmlwriter
zlib

[Zend Modules]

[mk-j]

Many legacy applications still need access to mcrypt. It was moved to pecl. For php 7.2+ try:

RUN apt-get update -y && \
    apt-get install -y libmcrypt-dev && \
    pecl install mcrypt-1.0.1 && \
    docker-php-ext-enable mcrypt

[uurtech]

Maybe that could help. https://lukasmestan.com/install-mcrypt-extension-in-php7-2/