**Apache Airflow version**: 1.10.4
**Environment**:
- **Cloud provider or hardware configuration**: AWS EC2
- **OS** (e.g. from /etc/os-release): ubuntu

**What happened**:
I am using `DockerOperator` in Airflow set to pull the image before executing. The pull step generates a lot of log spam:
![Screen Shot 2020-11-23 at 11 58 40 AM](https://user-images.githubusercontent.com/51468504/100010338-fab48680-2d84-11eb-8862-92e3540018b2.png)

For example the above log has 1104 lines, of which 1045 are Docker pull output.

**What you expected to happen**:
When nothing goes wrong, either of these three options:
* No output from Docker pull
* A single line saying the pull succeeded
* Several lines, one for each parent image, saying that the pull succeeded

When the pull fails, I expect a single line explaining that the pull failed and how/why.

The Docker pull output is clearly meant for an interactive shell as it is trying to display a live progress report. I see that [in my version](https://github.com/apache/airflow/blob/1.10.4/airflow/operators/docker_operator.py#L210-L212) the output is simply copied to the log. The [more recent version](https://github.com/apache/airflow/blob/8c42cf1b00c90f0d7f11b8a3a455381de8e003c5/airflow/providers/docker/operators/docker.py#L287-L291) also has similar code so I'm assuming the latest Airflow has the same problem.

**How to reproduce it**:
I think simply creating a DAG with a `DockerOperator` that has `force_pull=True` should reproduce the issue.

airflow/providers/docker/operators/docker.py
#
#
#
"""Implements Docker operator"""
import ast
from tempfile import TemporaryDirectory
from typing import Dict, Iterable, List, Optional, Union
from docker import APIClient, tls
from airflow.exceptions import AirflowException
from airflow.models import BaseOperator
from airflow.providers.docker.hooks.docker import DockerHook
from airflow.utils.decorators import apply_defaults
class DockerOperator(BaseOperator):