roles/minecraftserver: add primary user to Docker group

roles/minecraftserver.nix

@@ -32,6 +32,8 @@ in
       autoPrune.enable = true;
     };
 
+    users.users.etorres.extraGroups = [ "docker" ];
+
     networking.firewall.allowedTCPPorts = [ 25565 ];
   };
 }