make ROS_DISTRO an arg

Author: $(git config --global user.name)

Diff for: docker/Dockerfile

@@ -1,12 +1,13 @@
-ARG BASE_IMAGE=ros:jazzy-ros-base
+ARG ROS_DISTRO=jazzy
+ARG BASE_IMAGE=ros:${ROS_DISTRO}-ros-base
 FROM ${BASE_IMAGE} AS base
 
 ARG USER_ID=1000
 ARG GROUP_ID=1000
 ARG WB_HUMANOID_MPC_DIR="/wb_humanoid_mpc_ws"
 ARG PYTHON_VERSION=3.12
 ENV DEBIAN_FRONTEND=noninteractive
-ENV ROS_DISTRO=jazzy
+ENV ROS_DISTRO=${ROS_DISTRO}
 
 # Install system dependencies, ROS, Python, and development tools in a single step
 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -24,9 +25,6 @@ RUN apt-get update && \
     envsubst < /tmp/dependencies.txt | xargs apt-get install -y --no-install-recommends && \
     rm -rf /var/lib/apt/lists/*
 
-# Increase Git buffer size
-RUN git config --global http.postBuffer 1048576000
-
 # Set default shell to bash
 SHELL ["/bin/bash", "-c"]