propagate cache option to docker builds

infrastructure/aws/cdk/app.py

@@ -132,14 +132,17 @@ def __init__(
                 {"TITILER_XARRAY_CACHE_HOST": redis_cluster.attr_redis_endpoint_address}
             )
 
+        dockerfile_name = "Dockerfile.redis" if settings.enable_cache else "Dockerfile"
+
         lambda_function = aws_lambda.Function(
             self,
             f"{id}-lambda",
             runtime=runtime,
             code=aws_lambda.Code.from_docker_build(
                 path=os.path.abspath(context_dir),
-                file="infrastructure/aws/lambda/Dockerfile",
+                file=f"infrastructure/aws/lambda/{dockerfile_name}",
                 platform="linux/amd64",
+                build_args={"ENABLE_CACHE": settings.enable_cache},
             ),
             handler="handler.handler",
             memory_size=memory,

infrastructure/aws/lambda/Dockerfile.redis

@@ -0,0 +1,33 @@
+ARG PYTHON_VERSION=3.10
+
+FROM --platform=linux/amd64 public.ecr.aws/lambda/python:${PYTHON_VERSION}
+
+WORKDIR /tmp
+
+COPY pyproject.toml pyproject.toml
+COPY LICENSE LICENSE
+COPY README.md README.md
+COPY titiler/ titiler/
+
+# Install dependencies
+# HACK: aiobotocore has a tight botocore dependency
+# https://github.com/aio-libs/aiobotocore/issues/862
+# and becaise we NEED to remove both boto3 and botocore to save space for the package
+# we have to force using old package version that seems `almost` compatible with Lambda env botocore
+# https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html
+RUN pip install --upgrade pip
+
+RUN pip install ".[cache]" "mangum>=0.10.0" "botocore==1.29.76" "aiobotocore==2.5.0" -t /asset --no-binary pydantic;
+
+# Reduce package size and remove useless files
+RUN cd /asset && find . -type f -name '*.pyc' | while read f; do n=$(echo $f | sed 's/__pycache__\///' | sed 's/.cpython-[0-9]*//'); cp $f $n; done;
+RUN cd /asset && find . -type d -a -name '__pycache__' -print0 | xargs -0 rm -rf
+RUN cd /asset && find . -type f -a -name '*.py' -print0 | xargs -0 rm -f
+RUN find /asset -type d -a -name 'tests' -print0 | xargs -0 rm -rf
+RUN rm -rdf /asset/numpy/doc/ /asset/bin /asset/geos_license /asset/Misc
+RUN rm -rdf /asset/boto3*
+RUN rm -rdf /asset/botocore*
+
+COPY infrastructure/aws/lambda/handler.py /asset/handler.py
+
+CMD ["echo", "hello world"]