Update ruby 2.5.x to 2.5.7

Mitigates the following vulnerabilities:
  - CVE-2019-16255: A code injection vulnerability of Shell#[] and
    Shell#test
  - CVE-2019-16254: HTTP response splitting in WEBrick (Additional fix)
  - CVE-2019-15845: A NUL injection vulnerability of File.fnmatch and
    File.fnmatch?
  - CVE-2019-16201: Regular Expression Denial of Service vulnerability
    of WEBrick’s Digest access authentication

Author: Jan van der Pas

2.5/alpine3.10/Dockerfile

@@ -12,8 +12,8 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV RUBY_MAJOR 2.5
-ENV RUBY_VERSION 2.5.6
-ENV RUBY_DOWNLOAD_SHA256 7601e4b83f4f17bc1affe091502dd465282ffba0761dea57c071ead21b132cee
+ENV RUBY_VERSION 2.5.7
+ENV RUBY_DOWNLOAD_SHA256 201870e8f58957d542233fef588b1d76f7bf962fea44dcbd2237f4a5899a3f95
 ENV RUBYGEMS_VERSION 3.0.3
 
 # some of ruby's build scripts are written in ruby

2.5/alpine3.9/Dockerfile

@@ -12,8 +12,8 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV RUBY_MAJOR 2.5
-ENV RUBY_VERSION 2.5.6
-ENV RUBY_DOWNLOAD_SHA256 7601e4b83f4f17bc1affe091502dd465282ffba0761dea57c071ead21b132cee
+ENV RUBY_VERSION 2.5.7
+ENV RUBY_DOWNLOAD_SHA256 201870e8f58957d542233fef588b1d76f7bf962fea44dcbd2237f4a5899a3f95
 ENV RUBYGEMS_VERSION 3.0.3
 
 # some of ruby's build scripts are written in ruby

2.5/buster/Dockerfile

@@ -9,8 +9,8 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV RUBY_MAJOR 2.5
-ENV RUBY_VERSION 2.5.6
-ENV RUBY_DOWNLOAD_SHA256 7601e4b83f4f17bc1affe091502dd465282ffba0761dea57c071ead21b132cee
+ENV RUBY_VERSION 2.5.7
+ENV RUBY_DOWNLOAD_SHA256 201870e8f58957d542233fef588b1d76f7bf962fea44dcbd2237f4a5899a3f95
 ENV RUBYGEMS_VERSION 3.0.3
 
 # some of ruby's build scripts are written in ruby

2.5/stretch/Dockerfile

@@ -9,8 +9,8 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV RUBY_MAJOR 2.5
-ENV RUBY_VERSION 2.5.6
-ENV RUBY_DOWNLOAD_SHA256 7601e4b83f4f17bc1affe091502dd465282ffba0761dea57c071ead21b132cee
+ENV RUBY_VERSION 2.5.7
+ENV RUBY_DOWNLOAD_SHA256 201870e8f58957d542233fef588b1d76f7bf962fea44dcbd2237f4a5899a3f95
 ENV RUBYGEMS_VERSION 3.0.3
 
 # some of ruby's build scripts are written in ruby