Initial LiteLLM API Gateway Railway template

Multi-service deploy: LiteLLM proxy + PostgreSQL + Redis.
Universal LLM gateway with 100+ provider support.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile

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+FROM ghcr.io/berriai/litellm-database:main-stable
+
+COPY --chmod=755 entrypoint.sh /app/entrypoint.sh
+COPY config.yaml /app/config.yaml
+
+EXPOSE 4000
+
+ENTRYPOINT ["/app/entrypoint.sh"]