fix: composer prevents plugin execution as root

Within the context of Docker image builds this should be safe, but not
relying on the bamarni-bin[1] package would be better.

[1] Package that is used for the installation of the packages and their
associated binaries (vendor/bin/*) within separate global directories,
in order to avoid conflicting version requirements.

Author: mhitza

Dockerfile.php7-review

@@ -5,6 +5,10 @@ RUN mkdir -p /opt
 
 WORKDIR /opt/
 
+# Do not run Composer as root/super user! See https://getcomposer.org/root for details
+# Aborting as no plugin should be loaded if running as super user is not explicitly allowed
+ENV COMPOSER_ALLOW_SUPERUSER=1
+
 # install php-tools
 RUN git clone https://github.com/linkorb/php-tools.git
 RUN cd php-tools &&  COMPOSER_MEMORY_LIMIT=-1 /usr/bin/composer install

Dockerfile.php8-review

@@ -5,6 +5,10 @@ RUN mkdir -p /opt
 
 WORKDIR /opt/
 
+# Do not run Composer as root/super user! See https://getcomposer.org/root for details
+# Aborting as no plugin should be loaded if running as super user is not explicitly allowed
+ENV COMPOSER_ALLOW_SUPERUSER=1
+
 # install php-tools
 RUN git clone https://github.com/linkorb/php-tools.git
 RUN cd php-tools &&  COMPOSER_MEMORY_LIMIT=-1 /usr/bin/composer install