docker-compose.yml

# Controlled Debian environment for ft_ping.
#
# The image builds GNU inetutils 2.0 from source (the subject's reference),
# available inside the container as `ping` / `inetutils-2.0-ping` for easy
# side-by-side comparison. NET_RAW is granted so raw ICMP sockets work.
#
#   docker compose up -d                 # start the container (stays running)
#   docker compose exec ftping bash      # get a shell inside it
#   docker compose exec ftping make re   # build ft_ping
#   docker compose exec ftping ./ft_ping -c3 8.8.8.8
#   docker compose exec ftping ping     -c3 8.8.8.8   # inetutils-2.0 reference
#   docker compose exec ftping bash tests/run_tests.sh
#   docker compose down                  # stop / remove it
#
# One-off shell without keeping a container around:
#   docker compose run --rm ftping bash

services:
  ftping:
    build:
      context: .
      dockerfile: docker/Dockerfile
    image: ft_ping_debian
    container_name: ft_ping
    cap_add:
      - NET_RAW            # required for SOCK_RAW / IPPROTO_ICMP
    volumes:
      - .:/ft_ping         # live-mount the source; edits on the host are seen
    working_dir: /ft_ping
    tty: true
    stdin_open: true
    command: sleep infinity   # keep the container alive for `exec`