version: "3.8"
services:
  fetch-v3:
    build: { context: ./tools, dockerfile: Dockerfile.fetch }
    environment:
      MODE: "docker"     # or "url"
      ED_VER: "v3"
      OUTDIR: "/out"
    volumes:
      - ./apps/v3:/out
    # If MODE=url, also pass URL as env

  fetch-v4:
    build: { context: ./tools, dockerfile: Dockerfile.fetch }
    environment:
      MODE: "docker"
      ED_VER: "v4"
      OUTDIR: "/out"
    volumes:
      - ./apps/v4:/out