Fix incompatible gem versions in DOCKER=centos CI

* gem update --system tries to use rubygems-update 3.0 which requires ruby >= 2.3.0, so use ~> 2.7 * latest bundler 2.x also requires ruby >= 2.3.0, so use ~> 1.17
brianmario · Apr 27, 2019 · d0cc2d3 · d0cc2d3
1 parent 1228a50
commit d0cc2d3
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/.travis_Dockerfile_centos b/.travis_Dockerfile_centos
@@ -17,7 +17,7 @@ RUN yum -y install \
   gcc \
   gcc-c++ \
   make
-RUN gem update --system > /dev/null
-RUN gem install bundler
+RUN gem install --no-document "rubygems-update:~>2.7" && update_rubygems
+RUN gem install --no-document "bundler:~>1.17"
 
 CMD sh .travis_centos.sh