containerbase Composer releases

Prebuild Composer releases used by containerbase/base.

Development

mise install installs Node.js, pnpm, jactionlint, shellcheck and zizmor, then pnpm install --frozen-lockfile installs the dependencies.

pnpm lint            # pnpm oxfmt-fix to fix the formatting
jactionlint          # the GitHub workflows
zizmor .github/      # security audit of the GitHub workflows

CI runs jactionlint and zizmor through mise in the lint job, and the commit hook runs them on staged workflow files.