Install & Configure PgAdmin 4 using docker

Install PostgreSQL
Set up docker
```
sudo apt install docker.io
```
Pull pgadmin4 image
```
sudo docker pull dpage/pgadmin4
```
Create a directory in the host to store session data of PgAdmin4
```
sudo mkdir /var/lib/pgadmin
```

Map to Pgadmin user & group 5050

sudo chown -R 5050:5050 /var/lib/pgadmin/

Finally run the docker image

sudo docker run --name pgadmin -p 80:80 -v /var/lib/pgadmin:/var/lib/pgadmin  -e 'PGADMIN_DEFAULT_EMAIL=m.thirumal@hotmail.com' -e 'PGADMIN_DEFAULT_PASSWORD=thirumal' -d dpage/pgadmin4

or For Reverse Proxy

sudo docker run --name pgadmin -p 5050:80 -v /var/lib/pgadmin:/var/lib/pgadmin  -e 'PGADMIN_DEFAULT_EMAIL=m.thirumal@hotmail.com' -e 'PGADMIN_DEFAULT_PASSWORD=thirumal' -d dpage/pgadmin4

Enter your IP address in the browser to access pgadmin4
Create server with host name/address 172.17.0.1
To start docker container

sudo docker start pgadmin
Set up Reverse Proxy with Ngnix