Apply terraform fmt before a git commit

tf_pre-commit.sh

TF_FILES=$(git diff --cached --name-only --diff-filter=ACM | grep -e '\.tf$')

if [ ! -z $TF_FILES ]; then
    echo $TF_FILES | xargs -I'{}' -n1 sh -c "terraform fmt -list=false '{}'"

    if [ $? -eq 1 ]; then
        echo '⚠️  Aborting commit due to terraform errors'
        exit 1
    else
        echo '✨ Terraform files looking good'
        echo $TF_FILES | xargs -I'{}' -n1 sh -c "git add '{}'"
    fi
fi