we need ruby2.0 for jekyll

Dockerfile

@@ -7,14 +7,16 @@ MAINTAINER Michał "rysiek" Woźniak <rysiek@occrp.org>
 
 # environment
 ENV DEBIAN_FRONTEND=noninteractive 
-ENV HUGO_VERSION=0.15
+
+# Backports for new Ruby and great justice
+RUN apt-add-repository ppa:brightbox/ruby-ng
 
 # Ruby
-RUN DEBIAN_FRONTEND=noninteractive apt-get update && \
+RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         ca-certificates \
-        ruby \
-        ruby-dev \
+        ruby2.0 \
+        ruby2.0-dev \
         make \
         gcc \
         nodejs && \

README.md

@@ -10,7 +10,7 @@ jekyll-ci:
     environment:
         CI_SERVER_URL:        "https://git.example.com/ci"
         RUNNER_EXECUTOR:      "shell"
-        RUNNER_DESCRIPTION:   "Gitlab CI Jekyllrunner"
+        RUNNER_DESCRIPTION:   "Gitlab CI Jekyll runner"
         RUNNER_TOKEN:         "abcdef0123456789abcdef01234567"
     volumes:
         - "/var/www/:/output/"