Requests get a double API version path with daemons below API 1.45 (Podman) #78

Since 1.2.0 (#75, docker-php 4) the default client can't talk to a daemon whose max API version is below 1.45, e.g. Podman (it reports 1.41). Every container start fails with Docker\Exception\BadRequestException: Failed to decode JSON.

DockerClientFactory::createFromEnv() in docker-php 4 already negotiates the API version and adds the /v<negotiated> path. DockerContainerClient then passes this client to Docker::create($httpClient) with server plugins on, so the generated /v1.45 path is added too. The request becomes /v1.41/v1.45/info and the daemon answers 404 with plain text. Against Docker 1.45+ the two prefixes are the same, so it goes unnoticed.

docker-php docs say to pass false as the 4th argument for a factory client: https://github.com/docker-php/docker-php/blob/main/docs/connection.mdx

Fix: apply the server plugins only when a custom HTTP client factory is injected. PR follows.