10

I have a Docker Container with Phalcon3 and php 7. I am trying to install the php extension Mcrypt without luck.

If I do ssh to the container, and execute:

apt-get update
apt-get install php7.0-mcrypt

I get the following:

E: Unable to locate package php7.0-mcrypt
E: Couldn't find any package by regex 'php7.0-mcrypt'

Is there a way to get it installed?

subharb
  • 3,374
  • 8
  • 41
  • 72
  • you should always begin with a `apt-get update` so try something along the lines of `apt-get update && apt-get install -y php7.0-mcrypt` the update first is necessary because you may use an OS (ubuntu, Debian or such) that has had many updates since its arrival. By the way, `sudo` is not necessary, you are root unless you do `USER myuser` – user2915097 Nov 08 '17 at 14:08
  • have a look at https://hub.docker.com/r/phpdocker/phpdocker/~/dockerfile/ (and the line `FROM php:7.1-fpm` is built on Debian) – user2915097 Nov 08 '17 at 14:10
  • @user2915097 Sorry, yes I do apt-get update, and you are right sudo is not necesary in fact it complains about it. I updated the commands. Also Im traying to modify an existing container, not creating a new one, as you recommend on your second comment. – subharb Nov 08 '17 at 14:45
  • Post the Dockerfile, it will be simpler – user2915097 Nov 08 '17 at 15:05

2 Answers2

30

From PHP manual:

This extension has been moved to the » PECL repository and is no longer bundled with PHP as of PHP 7.4.0.

So in your Dockerfile you have to:

RUN apt-get install libmcrypt-dev
RUN pecl install mcrypt-1.0.4 && docker-php-ext-enable mcrypt
Hossein
  • 3,755
  • 2
  • 29
  • 39
thanosasimo
  • 418
  • 4
  • 6
  • Seems to work, but under Lando not completely. Or do I need add something there? https://stackoverflow.com/questions/54752814/how-to-install-php-mcrypt-in-lando-with-php-7-2 – ñull Feb 18 '19 at 17:57
17

Lets look at official manual for php docker image Section PHP Core Extensions

For example, if you want to have a PHP-FPM image with iconv, mcrypt and gd extensions, you can inherit the base image that you like, and write your own Dockerfile like this:

FROM php:7.0-fpm
RUN apt-get update && apt-get install -y \
        libfreetype6-dev \
        libjpeg62-turbo-dev \
        libmcrypt-dev \
        libpng-dev \
    && docker-php-ext-install -j$(nproc) iconv mcrypt \
    && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \
    && docker-php-ext-install -j$(nproc) gd

Rember, you must install dependencies for your extensions manually. If an extension needs custom configure arguments, you can use the docker-php-ext-configure script like this example. There is no need to run docker-php-source manually in this case, since that is handled by the configure and install scripts.

Bukharov Sergey
  • 9,767
  • 5
  • 39
  • 54
  • 1
    Thank you that was great help. You can also ssh on the container and execute that same command: apt-get update && apt-get install -y \ libfreetype6-dev \ libjpeg62-turbo-dev \ libmcrypt-dev \ libpng-dev \ && docker-php-ext-install -j$(nproc) iconv mcrypt \ && docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ \ && docker-php-ext-install -j$(nproc) gd – subharb Nov 09 '17 at 07:47