This file contains fixes for the issues related to postgres database.

### ISSUE #1: role "root" doesn't exits

While I run the postgres docker image with this command:

```bash
sudo docker run --name=tasksiner-postgres1 -e POSTGRES_USER=tasksiner -e POSTGRES_PASSWORD=tasksiner -p 5431:5432 -d postgres
```
without specifying the POSTGRES_USER environment variable, I got this issue

```bash
root@irti:/# createdb ss
createdb: could not connect to database template1: FATAL:  role "root" does not exist
root@irti:/# psql
psql: FATAL:  role "root" does not exist
```

##### FIX
I fixed the issue by providing the POSTGRES_USER environment variable

```bash
sudo docker run --name=tasksiner-postgres1 -e POSTGRES_USER=tasksiner -e POSTGRES_PASSWORD=tasksiner -p 5431:5432 -e POSTGRES_USER=root  -d postgres
```

Now I am able to run postgres command inside the docker container

```
root@070dae455732:/# createdb s
root@070dae455732:/# psql
psql (11.2 (Debian 11.2-1.pgdg90+1))
Type "help" for help.

root=#

```