diff --git a/composer.json b/composer.json
index 8546a8a..5e9a9aa 100644
--- a/composer.json
+++ b/composer.json
@@ -3,9 +3,9 @@
     "license": "MIT",
     "require": {
         "php": "7.4.*",
-        "ext-apcu": "^5.1",
-        "ext-ctype": "*",
-        "ext-iconv": "*",
+        "ext-apcu": "5.1.*",
+        "ext-ctype": "7.4.*",
+        "ext-iconv": "7.4.*",
         "symfony/console": "5.2.*",
         "symfony/dotenv": "5.2.*",
         "symfony/flex": "^1.3.1",
diff --git a/devops/scripts/init.sh b/devops/scripts/init.sh
index 6f25a15..1cde9b1 100755
--- a/devops/scripts/init.sh
+++ b/devops/scripts/init.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env sh
 
 # shellcheck disable=SC2046
-SCRIPTS_DIRECTORY=$(dirname $(realpath $0))
+SCRIPTS_DIRECTORY=$(dirname $(realpath "$0"))
 
 set -e
 
diff --git a/devops/scripts/install.sh b/devops/scripts/install.sh
index a41a6eb..d6cbab0 100755
--- a/devops/scripts/install.sh
+++ b/devops/scripts/install.sh
@@ -11,20 +11,16 @@ set -a
 [ -f devops/docker/.env ] && . devops/docker/.env
 set +a
 
-color="\e[34m"
-defaultColor="\e[0m"
-
 # shellcheck disable=SC2028
-echo "$color\n### Building containers ... $defaultColor"
+echo "### Building containers ..."
 docker-compose build \
   --build-arg HOME=$HOME \
   --build-arg USER=$USER \
   --build-arg UID=$(id -u) \
-  --build-arg GID=$(id -g) \
-  --build-arg COMPOSER_VERSION=$COMPOSER_VERSION
+  --build-arg GID=$(id -g)
 
 # shellcheck disable=SC2028
-echo "$color\n### Creating .env ... $defaultColor"
+echo "### Creating .env ..."
 ENV_FILE=.env
 if [ ! -f "$ENV_FILE" ]; then
   cp devops/dist/.env-dist "$ENV_FILE"