Add GitHub Actions workflow to release Ruby gem

.devcontainer/devcontainer.json

@@ -1,4 +1,11 @@
 {
 	"name": "Ruby",
-	"image": "mcr.microsoft.com/devcontainers/ruby:1-3.0-bullseye"
+	"image": "mcr.microsoft.com/devcontainers/ruby:1-3.0-bullseye",
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"github.vscode-github-actions"
+			]
+		}
+	}
 }

.github/workflows/gem.yml

@@ -0,0 +1,23 @@
+name: Ruby Gem
+
+on:
+    workflow_dispatch:
+
+jobs:
+  build:
+    name: Build + Publish
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: ruby/setup-ruby@v1
+    - name: Publish to RubyGems
+      run: |
+        mkdir -p $HOME/.gem
+        touch $HOME/.gem/credentials
+        chmod 0600 $HOME/.gem/credentials
+        printf -- "---\n:rubygems_api_key: ${HSLUV_RUBYGEMS_API_KEY}\n" > $HOME/.gem/credentials
+        gem build *.gemspec
+        gem push *.gem
+      env:
+        HSLUV_RUBYGEMS_API_KEY: "${{ secrets.HSLUV_RUBYGEMS_API_KEY }}"

.gitignore

@@ -1,6 +1,7 @@
 /.bundle/
 /.yardoc
 /Gemfile.lock
+/*.gem
 /_yardoc/
 /coverage/
 /doc/

README.md

@@ -3,10 +3,6 @@
 
 A Ruby implementation of [HSLuv](https://www.hsluv.org).
 
-## Demo
-
-![Demo](http://i.imgur.com/GTsNT8u.gif)
-
 ## Installation
 
 Add this line to your application's Gemfile:
@@ -35,28 +31,28 @@ Or install it yourself as:
 
 #### Hsluv::hsluv_to_hex(hue, saturation, lightness) -> color as a hex string
 
-```
+```ruby
 Hsluv.hsluv_to_hex(12.177, 100, 53.23)
 => #ff0000
 ```
 
 #### Hsluv::hsluv_to_rgb(hue, saturation, lightness) -> color as rgb
 
-```
+```ruby
 Hsluv.hsluv_to_rgb(12.177, 100, 53.23)
 => [0.9998643703868711, 6.849859221502719e-14, 8.791283550555612e-06]
 ```
 
 #### Hsluv::hex_to_hsluv(hex) -> list of floats as defined above
 
-```
+```ruby
 Hsluv.hex_to_hsluv("#ff0000")
 => [12.177050630061776, 100.0000000000022, 53.23711559542933]
 ```
 
 #### Hsluv::rgb_to_hsluv(rgb) -> list of floats as defined above
 
-```
+```ruby
 Hsluv.rgb_to_hsluv(0.99, 6.84e-14, 8.79e-16)
 => [12.17705063006216, 100.00000000000209, 52.711595266911985]
 ```
@@ -68,14 +64,24 @@ For HPLuv (the pastel variant), use:
 - `hex_to_hpluv`
 - `rgb_to_hpluv`
 
-## Testing
+## Local workflow
+
+If you don't have Ruby installed already, I recommend using our [devcontainer.json](.devcontainer/devcontainer.json) configuration to launch your editor in a pre-built Ruby container. Also consider using GitHub "Codespaces" feature if you don't use Docker.
+
+Initial setup:
 
-Run `rspec spec/`.
+```bash
+bundle install
+```
+
+Test:
+
+```bash
+bundle exec rspec
+```
 
-## Contributing
+## Releasing a new version
 
-1. Fork it ( https://github.com/hsluv/hsluv-ruby/fork )
-2. Create your feature branch (`git checkout -b my-new-feature`)
-3. Commit your changes (`git commit -am 'Add some feature'`)
-4. Push to the branch (`git push origin my-new-feature`)
-5. Create a new Pull Request
+1. Log in to [rubygems.org](https://rubygems.org/) using our shared [hsluv](https://rubygems.org/profiles/hsluv) profile
+2. Make a new API key if necessary, copy it to GitHub Actions `HSLUV_RUBYGEMS_API_KEY` secret
+3. Run [gem.yml](./github/workflows/gem.yml)

hsluv.gemspec

@@ -2,9 +2,9 @@
 
 Gem::Specification.new do |spec|
   spec.name          = 'hsluv'
-  spec.version       = '1.0.2'
+  spec.version       = '1.0.2.rc1'
   spec.authors       = ['Radu-Bogdan Croitoru', 'HSLuv Contributors']
-  spec.email         = ['[email protected]', '[email protected]']
+  spec.email         = ['[email protected]', '[email protected]']
 
   spec.summary       = 'Human friendly alternative to HSL.'
   spec.description   = 'HSLuv is implemented as a set of functions to convert colors between RGB, HSLuv and HPLuv.'
@@ -15,7 +15,6 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   spec.add_development_dependency 'bundler', '~> 2.0'
-  spec.add_development_dependency 'rake', '~> 12.3.3'
   spec.add_development_dependency 'pry', '~> 0.10'
   spec.add_development_dependency 'rspec', '~> 3.5'
 end