updated requirements with specific versioning

Dockerfile

@@ -1,20 +1,21 @@
 FROM python:3.11-slim
 
-# Sample dockerfile to generate image for testing container mgr
+# Use a minimal base image and install dependencies needed for Python package builds.
+ENV PIP_NO_CACHE_DIR=1
 
-RUN apt-get -y update && apt-get -y upgrade
-
-RUN pip install grpcio grpcio_tools
+RUN apt-get update \
+    && apt-get upgrade -y \
+    && apt-get install -y --no-install-recommends ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /home
 
-COPY ./volpe_py ./volpe_py
-
 COPY requirements.txt .
+RUN python -m pip install --upgrade pip setuptools wheel \
+    && python -m pip install --prefer-binary -r requirements.txt
 
-RUN pip install -r requirements.txt
-
+COPY ./volpe_py ./volpe_py
 COPY . .
 
-CMD [ "/usr/local/bin/python3", "./main.py" ]
+CMD ["python", "./main.py"]
 

build_image.sh

@@ -1,5 +1,12 @@
-DOCKER_CMD="${DOCKER_CMD:-podman}"
+#!/usr/bin/env bash
+set -euo pipefail
 
-rm volpe_img.tar
-$DOCKER_CMD build -t volpe_grpc_test .
-$DOCKER_CMD save -o volpe_img.tar volpe_grpc_test
+DOCKER_CMD="${DOCKER_CMD:-$(command -v podman || command -v docker || true)}"
+if [ -z "$DOCKER_CMD" ]; then
+  echo "Error: podman or docker command is required."
+  exit 1
+fi
+
+rm -f volpe_img.tar
+"$DOCKER_CMD" build -t volpe_grpc_test .
+"$DOCKER_CMD" save -o volpe_img.tar volpe_grpc_test

requirements.txt

@@ -1,6 +1,6 @@
 numpy
 opfunu
-grpcio-tools
-protobuf
+grpcio-tools>=1.78.1
+protobuf>=6.31.0
 setuptools<81
 deap