Mpdf does not install properly in Docker

[ChemiKyle]

Docker needs to be forced to install composer dependencies properly, assuming you are using 10.5.1. Here is a hacky guide to correcting the issue for want of the proper way to fix this.

Navigate to your docker instance's www/redcap_10.5.1 folder, update the require section to add the mpdf library:

    "require": {
        "mpdf/mpdf": "^7.0.1"
        },

"ssh" into your redcap docker container: docker exec -it rc1051_web bash and follow install composer as in the referenced guide, altering the install-dirto be less annoying, here are the commands as of this comment, note that the sha384 check will likely change:

php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('sha384', 'composer-setup.php') === '756890a4488ce9024fc62c56153228907f1545c228516cbf63f885e036d37e9a59d27d63f46af1d4d07ee0f76181c7d3') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
php composer-setup.php --install-dir=/usr/bin
php -r "unlink('composer-setup.php');"

While still in your "ssh" session, navigate to /var/www/html/redcap_v10.5.1 and run composer.phar update and wait.