@linc@phpc.social thanks for your reply. I'm keen to try out your migration tool.
The phpBB instance I want to migrate is on a remote shared server. I have access to the file system there and I've downloaded a DB backup today.

I run a Linux Mint box here at home that I was hoping to be able to run the migration on. I currently have the latest NBB running on this box (as installed via the nodebb upgrade command, so I expect it's not the bleeding edge from the "main" branch).

On your Guide page you mention migrating to NBB running against a MongoDB database. I prefer to use Postgres and have my local NBB configured to run with a Postgres database. Is that going to be an issue?

Also, do I have to have phpBB running on my local machine or will a restored database and local files be enough?

@linc@phpc.social is there a step missing on your (Guide Page)[https://nitroporter.org/guide.html]? I followed the 3 installation steps:

• Install Docker Desktop on Mac, Windows, or Linux.
• Download the latest Nitro Porter & unzip it.
• Open a terminal window and from the new folder run: ./bin/setup.sh

But when I ran the ./bin/setup.sh it returned the following:

No config.php file found. Copying config-sample.php.
no configuration file provided: not found

What's next:
    Debug this Compose error with Gordon → docker ai "help me fix this compose error"
Error response from daemon: No such container: porter-php

What's next:
    Try Docker Debug for seamless, persistent debugging tools in any container or image → docker debug porter-php
    Learn more at https://docs.docker.com/go/debug-cli/
Error response from daemon: No such container: porter-php

What's next:
    Try Docker Debug for seamless, persistent debugging tools in any container or image → docker debug porter-php
    Learn more at https://docs.docker.com/go/debug-cli/

When I check the config.php that's been copied over, its settings are of course all empty. So I guess that's why it doesn't proceed with the rest of the setup.

I see further down on that page under the heading "Alternate install: Manual Localhost" there are instructions about copying over config-sample.php and editing it, but they don't seem to apply to the "Docker Desktop" installation

@rob-hills Currently it can only output Mongo for NodeBB.

@rob-hills Hey, the `main` branch has big changes vs the 4.1 release, so mix-and-matching will break things worse. I suggest deleting the copy of 4.1 you got from the zip release and downloading the current `main` with `composer install`, or wait for 5.0 to release, perhaps later this week.