Moved from yarn to pnpm

[9larsons]

ref TryGhost/Ghost@f186b6a

Ghost moved over after 6.28 was cut from yarn to pnpm for the package manager. As yarn.lock no longer exists, we need to update the Docker image to point ot the pnpm-lock file and run corepack enable.

[acburdine]

@9larsons you'll also need to run ./update.sh to re-generate the Dockerfiles/update versions.json

[tianon]

I pulled a copy of this locally (with the intent to run ./update.sh and push the result so we can get this in), but I got the following when trying to do a build test of the result:

[22:25:11] → Version 6.31.0 does not exist
A CliError occurred.

Message: Version 6.31.0 does not exist

Debug Information:
    OS: Debian GNU/Linux, v12
    Node Version: v22.22.2
    Ghost-CLI Version: 1.29.1
    Environment: production
    Command: 'ghost install 6.31.0 --db mysql --dbhost mysql --no-prompt --no-stack --no-setup --dir /var/lib/ghost'

Try running ghost doctor to check your system for known issues.

You can always refer to https://ghost.org/docs/ghost-cli/ for troubleshooting.

Did I just hit some bad luck on the timing? I'm going to try manually munging versions.json to 6.30.0 (as comparing https://github.com/tryghost/ghost/releases vs https://github.com/tryghost/ghost/tags it looks like maybe 6.31 is just in-progress?) and hoping that can unblock.

[tianon]

Hah, and it looks like /tmp/yarn* was masking the fact that /tmp/v8* isn't matching anything anymore either: 😂

+ rm -rv /tmp/v8*
rm: cannot remove '/tmp/v8*': No such file or directory