buildx failed with: ERROR: failed to solve: process "/bin/sh -c apk update && apk add --no-cache ca-certificates ruby ruby-irb ruby-etc ruby-webrick su-exec tini && apk add --no-cache --virtual .build-deps build-base linux-headers ruby-dev gnupg && echo 'gem: --no-document' >> /etc/gemrc && gem install bundler && bundle install --gemfile=/Gemfile && apk del .build-deps && rm -rf /tmp/* /var/tmp/* /usr/lib/ruby/gems/*/cache/*.gem /usr/lib/ruby/gems/2.*/gems/fluentd-*/test" did not complete successfully: exit code: 6