Ref: https://migueldoctor.medium.com/how-to-run-postgresql-pgadmin-in-3-steps-using-docker-d6fe06e47ca1

Step1:
Download postgres docker image

$ docker pull postgres:latest

Step2:
Download pgadmin4

$ docker pull dpage/pgadmin4:latest

$ docker run -p 5050:80 -e 'PGADMIN_DEFAULT_EMAIL=pgadmin4@pgadmin.org' -e 'PGADMIN_DEFAULT_PASSWORD=admin' -d --name pgadmin4 dpage/pgadmin4

Step3:
Setup pgadmin 4
Open pgAdmin4 in your browser at: http://localhost:5050

Log in:

Username: pgadmin4@pgadmin.org
Password: admin
Click Add New Server and fill in the following fields:

Server Name: pg (or whatever you prefer)
On the Connection tab:
Host: host.docker.internal
Port: 49153
Username: postgres
Password: postgrespw

Postgres Commands

sudo service postgresql start
sudo -u postgres psql

list of relations
postgres=# \dt

list of databases
postgres=# \l

Connect to specific database
postgres=# \c "database name"

List info in a table
databaseName=# \d user

show data in a table
TABLE "tableNamehere";