Make sure folks dont leak GITHUB_TOKENs into the image when using git dependencies

README.md

@@ -257,6 +257,9 @@ COPY Gemfile Gemfile.lock ./
 RUN --mount=type=secret,id=GITHUB_TOKEN \
   BUNDLE_GITHUB__COM=x-access-token:$(cat /run/secrets/GITHUB_TOKEN) \
   bundle install
+
+# Remove git configs with exposed GITHUB_TOKEN
+RUN find /usr/local/bundle/cache/bundler/git -name "config" -delete
 ```
 
 ### Using command arguments for Traefik