ci: publish on tag in CI

.github/workflows/publish.yaml

@@ -0,0 +1,23 @@
+name: Publish
+
+on:
+  push:
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+'
+      - '[0-9]+.[0-9]+.[0-9]+-alpha.[0-9]+'
+      - '[0-9]+.[0-9]+.[0-9]+-beta.[0-9]+'
+      - '[0-9]+.[0-9]+.[0-9]+-rc.[0-9]+'
+
+jobs:
+  publish:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build
+        run: gem build fluent-plugin-sumologic_output.gemspec
+      - name: Publish
+        env:
+          GEM_HOST_API_KEY: ${{ secrets.RUGYGEMS_APIKEY }}
+        run: gem push fluent-plugin-sumologic_output-*.gem

CONTRIBUTING.md

@@ -0,0 +1,23 @@
+# Contributing
+
+## How to release
+
+1. Create a pull request named `chore: release x.y.z` with the following changes:
+
+   - Set `gem.version` to `"x.y.z"` in [fluent-plugin-sumologic_output.gemspec](fluent-plugin-sumologic_output.gemspec).
+   - Add new version to [CHANGELOG.md](./CHANGELOG.md).
+
+2. Create and push the release tag:
+
+   ```bash
+   git checkout main
+   git pull
+   export VERSION=x.y.z
+   git tag -a "v${VERSION}" -m "Release v${VERSION}"
+   git push origin "v${VERSION}"
+   ```
+
+   This will trigger the GitHub Actions [publish](./.github/workflows/publish.yaml) action to pubilsh the gem in Ruby Gems.
+
+3. Go to https://github.com/SumoLogic/fluentd-output-sumologic/releases and create a new release for the tag.
+   Copy the changes from Changelog and publish the release.

fluent-plugin-sumologic_output.gemspec

@@ -4,7 +4,7 @@ $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
 Gem::Specification.new do |gem|
   gem.name          = "fluent-plugin-sumologic_output"
-  gem.version       = "0.0.0"
+  gem.version       = "1.8.0"
   gem.authors       = ["Steven Adams", "Frank Reno"]
   gem.email         = ["[email protected]", "[email protected]"]
   gem.description   = %q{Output plugin to SumoLogic HTTP Endpoint}