Gitlab with SSL

How to Use GitLab
1

I am trying to set up a simple gitlab with SSL.

I have the following set up in a docker-compose.yaml file:

version: '3.6'
services:
  gitlab:
    image: 'gitlab/gitlab-ee:16.5.1-ee.0'
    restart: always
    hostname:  'gitlab.env-pri.com'
    container_name: gitlab
    environment:
      GITLAB_OMNIBUS_CONFIG: |
        external_url 'https://gitlab.env-pri.com:8443'
        letsencrypt['enable'] = false
        nginx['enable'] = true
        nginx['redirect_http_to_https'] = true
        nginx['ssl_certificate'] = "/etc/gitlab/ssl/gitlab.env-pri.com.crt"
        nginx['ssl_certificate_key'] = "/etc/gitlab/ssl/gitlab.env-pri.com.key"
    ports:
      - '80:80'
      - '2224:22'
      - '8443:443'
    volumes:
      - '$GITLAB_HOME/config:/etc/gitlab'
      - '$GITLAB_HOME/logs:/var/log/gitlab'
      - '$GITLAB_HOME/data:/var/opt/gitlab'
      - '/home/user1/gitlab/certs:/etc/gitlab/ssl:ro'
    shm_size: '256m'
    networks:
      - gitlab
networks:
  gitlab:
    name: gitlab-network

The certs were created(the .crt file is the concatenation of the server.crt, intermediate and the root crt) and then verified by:

openssl verify -CAfile root.crt -untrusted intermediate.crt gitlab.env-pri.com.crt
openssl rsa -noout -modulus -in gitlab.env-pri.com.key | openssl md5
openssl x509 -noout -modulus -in gitlab.env-pri.com.crt | openssl md5

After running the yaml, I check using curl -kv gitlab.env-pri.com:8443

It fails.

Blockquote

I turn of the firewall and ran it again:

curl -kv https://gitlab.env-pri.com:8443
* Rebuilt URL to: https://gitlab.env-pri.com:8443/
*   Trying *.*.*.*...
* TCP_NODELAY set
* Connected to gitlab.env-pri.com (*.*.*.*) port 8443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/pki/tls/certs/ca-bundle.crt
  CApath: none
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to gitlab.env-pri.com:8443
curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to gitlab.env-pri.com:8443

OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to gitlab.env-pri.com:8443

curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to gitlab.env-pri.com:8443

Has anyone come across this or does anyone know a fix?