Docker error during Misago installation on localhost (Windows)

/bin/sh: 1: ./dev: not found looks like bash script was executed by shell interpreter instead of bash. I would need to reproduce this on my machine first to confirm its an issue.

It's what sh in /bin/sh stands for.

So I've googled it and it looks like this issue is caused by you being on Windows. When you did git clone it replaced line endings from unix ones (LF) to windows ones (CRLF). Those windows line endings are syntax errors within linux containers, causing the error you see.

You need to disable line endings conversion in your git. I don't have Windows so I am unable to help here, but here's question about it on Reddit.

Good luck!

I will try to make a clean setup of Misago on my Mac to see if installation instruction in readme is still valid just to be sure.

It works and installs for me. But as an experiment I've changed line endings in dev file to windows format and tried another installation. This resulted in exact same error you've got:

Added mention of this to the readme.