title: pgAdmin's "Servers" tab is empty (Docker Compose)
body: <p>I am new to postgresql and unable to create a database,  please see my file below</p>
  <p>My Docker compose file is :</p>
  <pre><code>version: '3.5'
  
  services:
    postgres:
      container_name: postgres_container
      image: postgres
      environment:
        POSTGRES_USER: ${POSTGRES_USER:-postgres}
        POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-changeme}
        PGDATA: /data/postgres
      volumes:
         - postgres:/data/postgres
      ports:
        - &quot;5432:5432&quot;
      networks:
        - postgres
      restart: unless-stopped
    
    pgadmin:
      container_name: pgadmin_container
      image: dpage/pgadmin4
      environment:
        PGADMIN_DEFAULT_EMAIL: ${PGADMIN_DEFAULT_EMAIL:-pgadmin4@pgadmin.org}
        PGADMIN_DEFAULT_PASSWORD: ${PGADMIN_DEFAULT_PASSWORD:-admin}
        PGADMIN_CONFIG_SERVER_MODE: 'False'
      volumes:
         - pgadmin:/root/.pgadmin
  
      ports:
        - &quot;${PGADMIN_PORT:-5050}:80&quot;
      networks:
        - postgres
      restart: unless-stopped
  
  networks:
    postgres:
      driver: bridge
  
  volumes:
      postgres:
      pgadmin:
  </code></pre>
  <p><strong>The servers tab is empty,how to create a database,Do I need to enter something?</strong></p>
  <p><a href="https://i.stack.imgur.com/HhUcu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HhUcu.png" alt="enter image description here" /></a></p>