Docker-compose

Miscellaneous
- Make `COMPOSE_DOCKER_CLI_BUILD=1` the default
- Add usage metrics
- Sync schema with COMPOSE specification

Bugs
- On `docker-compose up`, attach only to services we read logs from

Miscellaneous
- Bump docker-py to 4.4.1

Features

- Support for Nvidia GPUs via device requests
- Support for service profiles
- Change the SSH connection approach to the Docker CLI's via shellout to the local SSH client (old behaviour enabled by setting `COMPOSE_PARAMIKO_SSH` environment variable)
- Add flag to disable log prefix

Bugs

- Make `parallel_pull=True` by default
- Bring back warning for configs in non-swarm mode
- Take `--file` in account when defining `project_dir`

Miscellaneous

- Improve failure report for missing mandatory environment variables
- Bump attrs to 20.3.0
- Bump more_itertools to 8.6.0
- Bump cryptograhy to 3.2.1
- Bump cffi to 1.14.4
- Bump virtualenv to 20.2.2
- Bump bcrypt to 3.2.0
- Bump gitpython to 3.1.11
- Bump docker-py to 4.4.0
- Bump Python to 3.9
- Linux: bump Debian base image from stretch to buster (required for Python 3.9)
- macOS: OpenSSL 1.1.1g to 1.1.1h, Python 3.7.7 to 3.9.0
- Bump pyinstaller 4.1
- Loosen restriction on base images to latest minor
- Updates of READMEs

Bugs

- Remove path checks for bind mounts

- Fix port rendering to output long form syntax for non-v1

- Add protocol to the docker socket address

Bugs

- Merged `max_replicas_per_node` on `docker-compose config`.

- Fixed `depends_on` serialization on `docker-compose config`.

- Fixed scaling when some containers are not running on `docker-compose up`.

- Enabled relative paths for `driver_opts.device` for `local` driver.

- Allowed strings for `cpus` fields.

Bugs

- Fix bug on `docker-compose run` container attach