Docker images are broken

[sdabhi23]

The containers created from the superset images published on DockerHub are crashing

Expected results

Superset starts up without error.

Actual results

The container crashes after throwing the following error:

[2020-12-11 19:48:43 +0000] [6] [INFO] Starting gunicorn 20.0.4
[2020-12-11 19:48:43 +0000] [6] [INFO] Listening at: http://0.0.0.0:8080 (6)
[2020-12-11 19:48:43 +0000] [6] [INFO] Using worker: gthread
[2020-12-11 19:48:43 +0000] [9] [INFO] Booting worker with pid: 9
[2020-12-11 19:48:47 +0000] [9] [ERROR] Exception in worker process
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
    worker.init_process()
  File "/usr/local/lib/python3.7/site-packages/gunicorn/workers/gthread.py", line 92, in init_process
    super().init_process()
  File "/usr/local/lib/python3.7/site-packages/gunicorn/workers/base.py", line 119, in init_process
    self.load_wsgi()
  File "/usr/local/lib/python3.7/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/usr/local/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/usr/local/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
    return self.load_wsgiapp()
  File "/usr/local/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/usr/local/lib/python3.7/site-packages/gunicorn/util.py", line 358, in import_app
    mod = importlib.import_module(module)
  File "/usr/local/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 953, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/app/superset/__init__.py", line 21, in <module>
    from superset.app import create_app
  File "/app/superset/app.py", line 29, in <module>
    from superset.extensions import (
  File "/app/superset/extensions.py", line 30, in <module>
    from superset.utils.async_query_manager import AsyncQueryManager
  File "/app/superset/utils/async_query_manager.py", line 23, in <module>
    import redis
ModuleNotFoundError: No module named 'redis'
[2020-12-11 19:48:47 +0000] [9] [INFO] Worker exiting (pid: 9)
[2020-12-11 19:48:47 +0000] [6] [INFO] Shutting down: Master
[2020-12-11 19:48:47 +0000] [6] [INFO] Reason: Worker failed to boot.

Screenshots

If applicable, add screenshots to help explain your problem.

How to reproduce the bug

1. Run the following commands:

docker pull apache/incubator-superset:latest

docker run -d -p 8080:8080 --name superset apache/incubator-superset:latest

Environment

(please complete the following information):

• superset version: 0.999.0dev
• python version: 3.7.9
• node.js version: NA

Checklist

Make sure to follow these steps before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

Additional context

I was able to narrow down the origin of the issue to 4d329071a1651994574c3ad1f26e32b56d9ff810 docker tag. The images right before this tag are working fine, all images including and after this tag are crashing

[robdiciuccio]

This should be resolved by #12079