> docker-compose up -d

version: '3.7'

services:

  pgadmin:
    restart: always
    image: dpage/pgadmin4
    container_name: pgadmin_container
    environment:
      PGADMIN_DEFAULT_EMAIL: ${PGADMIN_DEFAULT_EMAIL:-foobar}
      PGADMIN_DEFAULT_PASSWORD: ${PGADMIN_DEFAULT_PASSWORD:-password}
    ports:
      - "${PGADMIN_PORT:-8080}:80"

C:postgres> docker-compose up -d
Creating network "postgres_default" with the default driver
Creating pgadmin_container ... done
C:postgres> docker volume ls
DRIVER              VOLUME NAME
local               3ee8f970ff477052c6fba9001575a0efa0254deb8dcf73ca97d0422231c74931
C:postgres> docker-compose down
Stopping pgadmin_container ... done
Removing pgadmin_container ... done
Removing network postgres_default
C:postgres> docker-compose up -d
Creating network "postgres_default" with the default driver
Creating pgadmin_container ... done
C:postgres> docker volume ls
DRIVER              VOLUME NAME
local               3ee8f970ff477052c6fba9001575a0efa0254deb8dcf73ca97d0422231c74931
local               705dad9c905eb8f1679a9ee4ff290363c40f5285b8048204cab44bce26916845
C:postgres>