[rbardaji]

Closes #376.

What

• docker compose up -d --build for the Endpoint and for the bundled CKAN now runs under timeout. The limit is set with --compose-timeout <n> (minutes, or seconds with an s suffix); the default is 30 minutes and 0 means no limit.
• While it runs, a heartbeat line is printed every minute.
• When the limit runs out, the installer stops with an actionable message: reach the registry with docker pull, check the Docker Hub rate limit and any proxy, then re-run. The message also mentions --compose-timeout.
• A compose that fails outright now gives a message with its exit code. Before, the start step ended the run silently.
• Without timeout (coreutils) there is no limit, and the installer warns about it.

Tests

• New install/tests/test_compose_timeout.py: 10 tests, 6 of which fail on main.
• Real test with Docker on a laptop:
  • with --compose-timeout 2s the real image build was stopped after 3s with the message;
  • re-running without the flag completed the install, healthy.

Release 0.34.60.