Add Codespaces as an alternative to install/use Annif

[juhoinkinen]

No description provided.

[osma]

Some questions for the documentation:

• do you have to shut down the instance when you don't need it? how?
• is the data persistent? (I think so)
• how can I access it again afterwards, for example the following day?
• how do I edit projects.cfg under Codespaces?
• any special instructions for e.g. annif run command?

[juhoinkinen]

Some questions for the documentation:

• do you have to shut down the instance when you don't need it? how?

No, the documentation says it is not necessary to stop an instance, it happens automatically: "If you do not explicitly stop a codespace, it will continue to run until it times out from inactivity. Closing a codespace does not stop the codespace."

• is the data persistent? (I think so)

From the same docs: "When you stop a codespace, any running processes are stopped. Any saved changes in your codespace will still be available when you next start it. The terminal history is preserved, but the visible contents of the terminal window are not preserved between codespace sessions."

• how can I access it again afterwards, for example the following day?

1. The codespaces of Annif-tutorial owned by your GH account can be seen from here.
2. Click the codespace you want to resume working on, and you should see your terminal as it was before.

• how do I edit projects.cfg under Codespaces?

There is at least nano editor available for terminal use, or the Codespace editor can be used.

• any special instructions for e.g. annif run command?

TODO.

[juhoinkinen]

However there is a problem in the setup of the environment: Annif and its dependencies etc. are meant to be installed when the instance starts by using postCreateCommand or postStartupCommand in devcontainer.json, but sometimes it does not happen. Looks like this issue.

Maybe only on the first startup after some changes the installation really occurs...

I try if using Annif-tutorial Dockerimage in the devcontainer.json works better.

Edit: Seems to be working better. TODO: Adjust installation instructions for this.

[juhoinkinen]

We'll try this out with @reetagithub.