fix: add --name and --detach flags to container options parser

[mango766]

Fixes #5929

Problem

When using --name or -d in the options field of service containers (which is valid in GitHub Actions), act fails with:

Cannot parse container options: '--name my-redis-container': 'unknown flag: --name'

This happens because the container options flag parser in docker_cli.go doesn't register these flags, so pflag rejects them as unknown.

Fix

Added --name and --detach/-d to the flag set in addFlags(). These flags are accepted for compatibility with docker create/docker run but the values are not used by act, which manages container names and lifecycle internally. This follows the same pattern as --rm, which is already accepted but unused.

Example workflow that now works

services:
  redis:
    image: redis:latest
    ports:
      - 9003:6379
    options: --name my-redis-container

[themavik]

nit: test body for 6026

[themavik]

nit: --name and --detach parse but are ignored; anyone expecting docker parity might think the container is actually named or detached—worth spelling out the no-op in the flag description.