Error building Dockerfile on ruby >= 2.6.9.
FROM ruby:2.6.9-alpine RUN gem install bundler:2.1.4 RUN bundle config set no-cache 'true' RUN bundle install ADD . .
---> Running in e2bc34dbc146 ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write permissions for the /usr/local/bundle directory. The command '/bin/sh -c gem install bundler:2.1.4' returned a non-zero code: 1
Circleci configured with base image
ps: similar error Error with installing bundler, but that does not apply here, as the final solution is a docker-compose file with 5 dependencies/services.
pps: the same steps were working ruby:2.5.9-alpine and