SETI-2444 fix docker run on jenkins slaves

Author: Petr Gadorek

Dockerfile.ruby

@@ -2,7 +2,7 @@ FROM ruby:2.3-alpine
 
 MAINTAINER Tomas Korcak <korczis@gmail.com>
 
-RUN apk add --no-cache curl make gcc git g++ python linux-headers binutils-gold gnupg libstdc++ openssl cmake
+RUN apk add --no-cache curl make gcc git g++ python linux-headers binutils-gold gnupg libstdc++ openssl cmake curl-dev
 
 RUN ln -s /usr/bin/make /usr/bin/gmake