I would also add a note when using the Docker set up as the instructions above will fail with an error similar to
ambientimpact:~/.../Discourse/discourse$ d/rake plugin:create[neurocracy-date-rewrite]
Cloning 'https://github.com/discourse/discourse-plugin-skeleton' to '/src/plugins/neurocracy-date-rewrite'...
Initializing git repository...
Initialized empty Git repository in /src/plugins/neurocracy-date-rewrite/.git/
Author identity unknown
*** Please tell me who you are.
Run
git config --global user.email "you@example.com"
git config --global user.name "Your Name"
to set your account's default identity.
Omit --global to set the identity only in this repository.
fatal: empty ident name (for <discourse@localhost>) not allowed
rake aborted!
Command failed with exit 128: git
/src/lib/tasks/plugin.rake:354:in `system'
/src/lib/tasks/plugin.rake:354:in `block (2 levels) in <main>'
/src/lib/tasks/plugin.rake:344:in `chdir'
/src/lib/tasks/plugin.rake:344:in `block in <main>'
Tasks: TOP => plugin:create
(See full trace by running task with --trace)
You first need to set up your .gitconfig inside the container (change email and name as needed) before trying to create the plug-in:
d/exec git config --global user.email "you@example.com"
d/exec git config --global user.name "Your Name"
d/rake plugin:create[plugin-name]