From 15cee9454da60aa0d488979926ad8d119e48a19e Mon Sep 17 00:00:00 2001
From: Peter Yates <peter.yates@graphia.co.uk>
Date: Fri, 13 Oct 2023 13:57:39 +0100
Subject: [PATCH] Add publishing workflow

This flow allows tags to be built into gems and those gems published to
GitHub's container registry, simplifying the Gemfile entries for
projects that consume it.

The Ruby and Rails versions align with the lowest versions in the test
matrix.

I didn't add Rubygems publishing because I'm not sure who's account it
should be added to, perhaps that could follow.
---
 .github/workflows/publish.yml | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 .github/workflows/publish.yml

diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
new file mode 100644
index 00000000..28202d51
--- /dev/null
+++ b/.github/workflows/publish.yml
@@ -0,0 +1,32 @@
+name: Publish
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: Tag
+        required: true
+jobs:
+  publish:
+    name: Publish GitHub Package Registry
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          ref: ${{ github.event.inputs.tag }}
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '2.7'
+
+      - name: Install gems
+        env:
+          RAILS_VERSION: '6.1.7'
+        run: |
+          gem install bundler
+          bundle install --jobs 4 --retry 3
+
+      - name: Publish gem
+        uses: dawidd6/action-publish-gem@v1
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}