changed Dockerfile to execute docker-entrypoint.sh without chmod +x

[lanjelot]

This is really just to make the dev env work straight out of the box. With the below docker-compose.yml (note the new build and volumes directives), code changes are live but you'd still need to chmod +x docker-entrypoint.sh manually.

  ctfpad:
    #build: https://github.com/hugsy/ctfpad.git#main
    build:
      context: ../ctfpad.git
    volumes:
      - ../ctfpad.git:/code
    command: python manage.py runserver 0.0.0.0:8000

Anyways, thought you may find this helpful.