Land #11184, update to Ruby 2.6.1

.ruby-version

@@ -1 +1 @@
-2.5.3
+2.6.1

.travis.yml

@@ -14,6 +14,7 @@ rvm:
   - '2.3.8'
   - '2.4.5'
   - '2.5.3'
+  - '2.6.1'
 
 env:
   - CMD='bundle exec rake rspec-rerun:spec SPEC_OPTS="--tag content"'

Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:2.5.3-alpine3.7 AS builder
+FROM ruby:2.6.1-alpine3.9 AS builder
 LABEL maintainer="Rapid7"
 
 ARG BUNDLER_ARGS="--jobs=8 --without development test coverage"
@@ -16,7 +16,7 @@ RUN apk add --no-cache \
       bison \
       build-base \
       ruby-dev \
-      libressl-dev \
+      openssl-dev \
       readline-dev \
       sqlite-dev \
       postgresql-dev \
@@ -37,7 +37,7 @@ RUN apk add --no-cache \
     && chmod -R a+r /usr/local/bundle
 
 
-FROM ruby:2.5.3-alpine3.7
+FROM ruby:2.6.1-alpine3.9
 LABEL maintainer="Rapid7"
 
 ENV APP_HOME=/usr/src/metasploit-framework

lib/msf/core.rb

@@ -13,6 +13,17 @@
 # Include backported features for older versions of Ruby
 require 'backports'
 
+# Remove bigdecimal warning - start
+# https://github.com/ruby/bigdecimal/pull/115
+# https://github.com/rapid7/metasploit-framework/pull/11184#issuecomment-461971266
+# TODO: remove when upgrading from rails 4.x
+require 'bigdecimal'
+
+def BigDecimal.new(*args, **kwargs)
+  BigDecimal(*args, **kwargs)
+end
+# Remove bigdecimal warning - end
+
 # The framework-core depends on Rex
 require 'rex'
 require 'rex/ui'