+ update composer bash helper script

* preventing create symlinks if symlink has exists

bash/update-composer.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+PHP_VERSION=$1 # Without dot
+COMPOSER_VERSION=$2
+
+if [[ -z "${PHP_VERSION}" ]]; then PHP_VERSION=74; fi
+
+CONTAINER=$(docker ps | grep workspace${PHP_VERSION} | awk '{print $1}')
+
+if [[ -z "${CONTAINER}" ]]; then
+  echo "Unable to find container: workspace${PHP_VERSION}"
+  exit 1
+fi
+
+if [[ -z "${COMPOSER_VERSION}" ]]; then
+  COMPOSER_VERSION=1
+fi
+
+docker exec -ti "${CONTAINER}" composer self-update --${COMPOSER_VERSION}