Why is Python 3.8 not found when installing psycopg?

Question

Python

I install the psycopg adapter using the command

docker-compose exec web pipenv install psycopg2-binary==2.8.5

and results in an error like:

Warning: Python 3.8 was not found on your system…
You can specify specific versions of Python with:
  $ pipenv --python path/to/python

Answer 1

publish the dockerfile of the web service. It must start with FROM python:3.8