feat: add support for Go, Ruby, and NuGet modules with integration testing configurations

Signed-off-by: d9pouces <github@19pouces.net>

tests/dockerfiles/Ruby.Dockerfile

@@ -0,0 +1,10 @@
+FROM ruby:3-slim AS target
+FROM interdiode/id-configurator:latest AS configuration
+COPY --from=target / /src/
+COPY --from=generated-config Ruby.yaml /config.yaml
+RUN id-configurator apply --config /config.yaml --src /src --dst /dst
+FROM target AS runtime
+COPY --from=configuration /dst/ /
+RUN gem install idconfiguratortestpkg --no-document \
+    && grep -qx 'test-only gem served by the id-configurator integration tests' \
+       "$(find "$(gem environment gemdir)" -name marker.txt)"