Fix small thingies

docker/web/docker-compose.yaml

@@ -47,6 +47,7 @@ services:
       - gitlab_data:/var/opt/gitlab
       - gitlab_logs:/var/log/gitlab
       - gitlab_config:/etc/gitlab
+    restart: always
     # GITLAB_SMTP_PASSWORD
     env_file: gitlab.env
     environment:
@@ -68,6 +69,11 @@ services:
 
         gitlab_rails['gitlab_shell_ssh_port'] = 2222
 
+        # https://docs.gitlab.com/omnibus/settings/rpi.html
+        puma['worker_processes'] = 2
+        sidekiq['concurrency'] = 9
+        prometheus_monitoring['enable'] = false
+
         nginx['listen_port'] = 80
         nginx['listen_https'] = false