notes

docker-compose commands:
  docker-compose down -v
  docker-compose build
  docker-compose up


Useful links:
https://testdriven.io/blog/dockerizing-flask-with-postgres-gunicorn-and-nginx/

To check that postgressql set up OK, run the following commands

[elena@elena-VB: ...sktop/docker_flask/services/web]$ docker-compose exec db psql --username=elena --dbname=psql_dev

[elena@elena-VB: ...sktop/docker_flask/services/web]$ sudo docker-compose exec db psql --username=elena --dbname=psql_dev
psql (13.9)
Type "help" for help.

psql_dev=# \l
                             List of databases
   Name    | Owner | Encoding |  Collate   |   Ctype    | Access privileges 
-----------+-------+----------+------------+------------+-------------------
 postgres  | elena | UTF8     | en_US.utf8 | en_US.utf8 | 
 psql_dev  | elena | UTF8     | en_US.utf8 | en_US.utf8 | 
 template0 | elena | UTF8     | en_US.utf8 | en_US.utf8 | =c/elena         +
           |       |          |            |            | elena=CTc/elena
 template1 | elena | UTF8     | en_US.utf8 | en_US.utf8 | =c/elena         +
           |       |          |            |            | elena=CTc/elena
(4 rows)

psql_dev=# \c psql_dev
You are now connected to database "psql_dev" as user "elena".
psql_dev=# \dt
       List of relations
 Schema | Name  | Type  | Owner 
--------+-------+-------+-------
 public | users | table | elena
(1 row)

psql_dev=# \q