docs: changelog for redis_max_connections validation

Author: Yuri Zmytrakov

CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Added
 
+- Added validator for `REDIS_MAX_CONNECTIONS` to handle empty or null-like values ("", "null", None) and return None instead. [#519](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/519)
+
 ### Changed
 
 ### Fixed

Dockerfile

@@ -0,0 +1,25 @@
+FROM python:3.13-slim
+
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY README.md .
+COPY stac_fastapi/core/pyproject.toml stac_fastapi/core/
+COPY stac_fastapi/sfeos_helpers/pyproject.toml stac_fastapi/sfeos_helpers/
+COPY stac_fastapi/opensearch/pyproject.toml stac_fastapi/opensearch/
+
+RUN pip install --no-cache-dir --upgrade pip setuptools wheel
+
+COPY stac_fastapi/ stac_fastapi/
+
+RUN pip install --no-cache-dir ./stac_fastapi/core
+RUN pip install --no-cache-dir ./stac_fastapi/sfeos_helpers
+RUN pip install --no-cache-dir ./stac_fastapi/opensearch[server]
+
+EXPOSE 8080
+
+CMD ["uvicorn", "stac_fastapi.opensearch.app:app", "--host", "0.0.0.0", "--port", "8080"]