chore: add ruby-dev to the buildbot worker
@@ -30,7 +30,7 @@ RUN apt-get update && \
# Linter dependencies
shellcheck clang-format-11 \
# Kythe misc dependencies
- asciidoc source-highlight graphviz curl parallel jq && \
+ asciidoc ruby-dev source-highlight graphviz curl parallel jq && \
apt-get clean
# Make clang-11 the default
