version: "3.7"
services:
  php-cli:
    image: rdok/php-docker:7.4-cli-buster
    working_dir: /app
    volumes:
      - .:/app
    user: ${UID}:${GID}
  php-ci:
    image: rdok/php-docker:8.0-cli-alpine3.13
    working_dir: /app
    volumes:
      - .:/app

version: "3.7"
services:
  php-cli:
    image: rdok/php-docker:7.4-cli-buster
    working_dir: /app
    volumes:
      - .:/app
    user: ${UID}:${GID}
  php-ci:
    image: rdok/php-docker:7.4-cli-alpine3.13
    working_dir: /app
    volumes:
      - .:/app

Fix CI PHP version to 7.4.
Fix CI PHP version to 7.4.
