chore: add ability developing in Docker

.dockerdev/docker-compose.yml

@@ -0,0 +1,16 @@
+version: '3.4'
+
+services:
+  app:
+    image: ruby:2.6
+    environment:
+      - GEM_HOME=/bundle
+      - BUNDLE_PATH=/bundle
+      - HISTFILE=/app/tmp/.bash_history
+    working_dir: /app
+    volumes:
+      - ..:/app
+      - bundle:/bundle
+
+volumes:
+  bundle:

CHANGELOG.md

@@ -2,7 +2,9 @@
 
 ## master
 
-- Require a minimum version of Ruby when installing the gem. ([@bibendi][]) 
+- Require a minimum version of Ruby when installing the gem. ([@bibendi][])
+
+- Add ability to develop the gem with Docker. ([@bibendi][])
 
 ## 0.6.4 (2019-06-26) 👶
 
@@ -133,3 +135,4 @@ Ignore tagged logger features ('cause we do not have _persistent_ logger).
 [@alekseyl]: https://github.com/alekseyl
 [@DmitryTsepelev]: https://github.com/DmitryTsepelev
 [@sponomarev]: https://github.com/sponomarev
+[@bibendi]: https://github.com/bibendi

README.md

@@ -107,5 +107,9 @@ See [documentation](https://docs.anycable.io/#/ruby/compatibility).
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/anycable/anycable-rails.
 
+## Development
+
+If you are familiar with Docker, you can use [DIP](https://github.com/bibendi/dip) to start developing the gem quickly.
+
 ## License
 The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).

dip.yml

@@ -0,0 +1,42 @@
+version: '4'
+
+compose:
+  files:
+    - .dockerdev/docker-compose.yml
+  project_name: anycable-rails
+
+interaction:
+  bash:
+    description: Open a Bash shell in app's container
+    service: app
+    command: /bin/bash
+
+  dev:
+    service: app
+    command: exit
+    subcommands:
+      console:
+        description: Open a gem console
+        command: ./bin/console
+      clean:
+        description: Clean dependencies
+        command: rm -rf Gemfile.lock
+
+  bundle:
+    description: Run Bundler commands
+    service: app
+    command: bundle
+
+  rspec:
+    description: Run RSpec commands
+    service: app
+    command: bundle exec rspec
+
+  rubocop:
+    description: Run Rubocop commands
+    service: app
+    command: bundle exec rubocop
+
+provision:
+  - dip dev clean
+  - dip bundle install