PROJECT_NAME variable in ssh runner

i have only CI_PROJECT_ID in env. so i have to do

export PROJECT_NAME=`basename $CI_PROJECT_DIR`

for project name variable. could you please add it to ssh runner. i want to use it that way

before_script:
  - export PROJECT_NAME=`basename $CI_PROJECT_DIR`
  - mkdir /var/www/builds/{$PROJECT_NAME}/${CI_BUILD_REF_NAME}
  - cp -R . /var/www/builds/{$PROJECT_NAME}/${CI_BUILD_REF_NAME}