I’m currently using Docker Desktop and I’m encountering an issue with my database. I have been able to use the pgAdmin container without any problems. However, when I attempt to connect the database with the server, I encounter an error.

Unfortunately, I haven’t been able to determine the cause of this issue. I would appreciate any assistance or suggestions on how to resolve this problem. Thank you in advance for your help.

Here is my docker-compose.yml file:

version: '3'

services:
  myDB:
    image: postgres:16
    container_name: my-database
    restart: always
    ports:
      - 5433:5432
    environment:
      - POSTGRES_USER=alumno
      - POSTGRES_PASSWORD=123456
      - POSTGRES_DB=course-db
    volumes:
      - ./postgres:/var/lib/postgresql/data
  
  pdAdmin:
    image: dpage/pgadmin4
    container_name: pgadmin4
    restart: always
    depends_on:
      - myDB
    ports:
      - 8080:80
    user: '$UID:$GID'
    environment:
      - [email protected]
      - PGADMIN_DEFAULT_PASSWORD=123456
    volumes:
      - ./pgadmin:/var/lib/pgadmin
      - ./pgadmin:/certs/server.cert
      - ./pgadmin:/certs/server.key
      - ./pgadmin:/pgadmin4/servers.json

I need to use port 5433 for this connection, as port 5432 is already being used by PostgreSQL on my PC.

Here is the logs of the container:

2024-05-18 12:17:09 
2024-05-18 12:17:09 PostgreSQL Database directory appears to contain a database; Skipping initialization
2024-05-18 12:17:09 
2024-05-18 12:17:09 2024-05-18 16:17:09.672 UTC [1] LOG:  starting PostgreSQL 16.3 (Debian 16.3-1.pgdg120+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 12.2.0-14) 12.2.0, 64-bit
2024-05-18 12:17:09 2024-05-18 16:17:09.672 UTC [1] LOG:  listening on IPv4 address "0.0.0.0", port 5432
2024-05-18 12:17:09 2024-05-18 16:17:09.672 UTC [1] LOG:  listening on IPv6 address "::", port 5432
2024-05-18 12:17:09 2024-05-18 16:17:09.685 UTC [1] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
2024-05-18 12:17:09 2024-05-18 16:17:09.698 UTC [29] LOG:  database system was shut down at 2024-05-18 16:16:54 UTC
2024-05-18 12:17:09 2024-05-18 16:17:09.709 UTC [1] LOG:  database system is ready to accept connections
2024-05-18 12:22:09 2024-05-18 16:22:09.750 UTC [27] LOG:  checkpoint starting: time
2024-05-18 12:22:09 2024-05-18 16:22:09.804 UTC [27] LOG:  checkpoint complete: wrote 3 buffers (0.0%); 0 WAL file(s) added, 0 removed, 0 recycled; write=0.015 s, sync=0.007 s, total=0.055 s; sync files=2, longest=0.004 s, average=0.004 s; distance=0 kB, estimate=0 kB; lsn=0/19536E0, redo lsn=0/19536A8
2024-05-18 12:43:36 2024-05-18 16:43:36.351 UTC [91] LOG:  invalid length of startup packet
2024-05-18 12:43:37 2024-05-18 16:43:37.483 UTC [92] LOG:  invalid length of startup packet
2024-05-18 12:43:38 2024-05-18 16:43:38.965 UTC [93] LOG:  invalid length of startup packet
2024-05-18 12:43:39 2024-05-18 16:43:39.974 UTC [94] LOG:  invalid length of startup packet