Update README.md

README.md

@@ -17,7 +17,7 @@ This is a Ruby image for [Drone](https://github.com/drone/drone), inspired by [4
 
 Intent of this image is CI testing of Ruby or Rails projects with Drone.
 
-This image supports `Drone 0.7.0` and `MRI Ruby 2.4.2`:
+This image supports `Drone 0.7.0` and `MRI Ruby 2.5.1`:
 
 It has a [bundler](http://bundler.io/) installed.
 
@@ -78,7 +78,7 @@ pipeline:
 
 services:
   database:
-    image: postgres:9.6
+    image: postgres:10.5
     environment:
       - POSTGRES_USER=...
       - POSTGRES_PASSWORD=...
@@ -88,4 +88,4 @@ The example `drone.yml` file above shows how [RSpec](http://rspec.info/) and [Sp
 
 At [Juicymo](https://www.juicymo.cz), we use [GitLab](https://github.com/gitlabhq/gitlabhq) which is connected to our Drone CI server. With this setup Drone is able to detect all projects from GitLab automatically. After particular Ruby on Rails project is enabled for testing in Drone, all you need to do is to add, commit and push a `.drone.yml` to the git repository. Drone will automatically load it and start the integration.
 
-See source at [GitHub](https://github.com/Juicymo/drone-ruby).
+See source at [GitHub](https://github.com/Juicymo/drone-ruby).