fix: dialogflow integration in docker environments (#3072)

* natively compile ruby gems

* add missing compiler tools

* add bundler platform ruby to force native compilation

* fix bundler env in final docker stage

* add comments to DockerFile

Co-authored-by: Sojan Jose <sojan@pepalo.com>

docker/Dockerfile

@@ -33,6 +33,11 @@ WORKDIR /app
 
 COPY Gemfile Gemfile.lock ./
 
+# natively compile grpc and protobuf to support alpine musl (dialogflow-docker workflow)
+# https://github.com/googleapis/google-cloud-ruby/issues/13306
+RUN apk add --no-cache musl ruby-full ruby-dev gcc make musl-dev openssl openssl-dev g++ linux-headers
+RUN bundle config set --local force_ruby_platform true
+
 # Do not install development or test gems in production
 RUN if [ "$RAILS_ENV" = "production" ]; then \
   bundle config set without 'development test'; bundle install -j 4 -r 3; \
@@ -71,6 +76,9 @@ ENV EXECJS_RUNTIME ${EXECJS_RUNTIME}
 ARG RAILS_SERVE_STATIC_FILES=true
 ENV RAILS_SERVE_STATIC_FILES ${RAILS_SERVE_STATIC_FILES}
 
+ARG BUNDLE_FORCE_RUBY_PLATFORM=1
+ENV BUNDLE_FORCE_RUBY_PLATFORM ${BUNDLE_FORCE_RUBY_PLATFORM}
+
 ARG RAILS_ENV=production
 ENV RAILS_ENV ${RAILS_ENV}
 ENV BUNDLE_PATH="/gems"

docker/entrypoints/rails.sh

@@ -20,6 +20,7 @@ done
 
 echo "Database ready to accept connections."
 
+#install missing gems for local dev as we are using base image compiled for production
 bundle install
 
 BUNDLE="bundle check"