chore: update inline docs in builder Dockerfile and entrypoint

Author: eoinsha

resources/Dockerfile

@@ -1,10 +1,14 @@
+# Use for the container image that uv-python-lambda will use to bundle one or more Lambda functions
+# from a uv project (including those with one or more workspaces).
+
 ARG IMAGE_ARCH=arm64   # or x86_64 (not amd64 as per Docker platform)
 ARG UV_VERSION=0.5.27
 ARG PYTHON_VERSION=3.12
 ARG BUNDLING_IMAGE=public.ecr.aws/sam/build-python${PYTHON_VERSION}:latest-${IMAGE_ARCH}
+
 FROM ghcr.io/astral-sh/uv:${UV_VERSION} AS uv
 FROM ${BUNDLING_IMAGE}
-# FROM public.ecr.aws/lambda/python:3.12-$IMAGE_ARCH
+
 COPY --from=uv /uv /uvx /bin/
 COPY *.sh /root
 RUN chmod +x /root/*.sh

resources/entrypoint.sh

@@ -1,5 +1,8 @@
 #!/bin/bash
 
+# This is the entrypoint script for the builder container used to bundle Python Lambda functions with UV.
+# It sets up the environment and waits for commands to execute.
+
 # /uvbuild is the working directory for caches and staged outputs.
 # /src is the project root mounted from the host.