I am on a system with docker but without PHP

composer.phar

#!/bin/bash

set -euo pipefail

if [ ! -d "$HOME/.composer" ]; then
  mkdir "$HOME/.composer"
  touch "$HOME/.composer/.lastpull"
fi

if test find "$HOME/.composer/" -name ".lastpull" -and -mtime +7 > /dev/null 2>&1 ; then
  docker pull composer
  touch "$HOME/.composer/.lastpull"
fi


docker run \
    -t \
    --net host \
    --interactive \
    --rm \
    --user "$(id -u):$(id -g)" \
    --volume /etc/passwd:/etc/passwd:ro \
    --volume /etc/group:/etc/group:ro \
    --volume "$HOME/.ssh:/app/.ssh" \
    --volume "$(pwd):/app" \
    --volume "$SSH_AUTH_SOCK:/ssh-auth.sock" \
    --volume "$HOME/.composer:/composer" \
    --env SSH_AUTH_SOCK=/ssh-auth.sock \
    composer "$@"