From [https://www.pgadmin.org/docs/pgadmin4/latest/container_deployment.html official doc]

Use a container

docker pull dpage/pgadmin4
docker run -p 80:80 \
    -e '[email protected]' \
    -e 'PGADMIN_DEFAULT_PASSWORD=SuperSecret' \
    -d dpage/pgadmin4

Create connection. If you've got an error message, after double-checking what you typed, make you enables access from outside in pg.

[https://omnidb.org/en/documentation-en/13-debug-plpgsql-functions-en Write and debug]