Update Dockerfile to include python-is-python3 and enhance entrypoint script for conditional package list updates based on network availability.

Dockerfile

@@ -24,14 +24,13 @@ RUN apt update && apt install -y \
         # Packet analysis tools
         tshark \
         # Programming languages and runtimes
-        python3 python3-pip python3-venv python3-dev \
+        python3 python3-pip python3-venv python3-dev python-is-python3 \
         # Development tools
         software-properties-common build-essential \
         # Remote access
         openssh-server \
         # Localization
         locales
-    # Note: Keeping apt cache for dev convenience
 
 # Install Node.js using official NodeSource repository
 RUN curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash - && \

scripts/entrypoint.sh

@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
 
-# Gracefully update package lists if network is available
-echo "Checking network connectivity..."
-if ping -c 1 -W 5 8.8.8.8 >/dev/null 2>&1 || ping -c 1 -W 5 1.1.1.1 >/dev/null 2>&1; then
+if [[ "$UPDATE_APT" == "1" || "${UPDATE_APT,,}" == "true" ]]; then
+    # Gracefully update package lists if network is available
+    echo "Checking network connectivity..."
+    if ping -c 1 -W 5 8.8.8.8 >/dev/null 2>&1 || ping -c 1 -W 5 1.1.1.1 >/dev/null 2>&1; then
         echo "Network detected, refreshing package lists..."
         if sudo apt update; then
             echo "Package lists updated successfully"
@@ -10,8 +11,9 @@ if ping -c 1 -W 5 8.8.8.8 >/dev/null 2>&1 || ping -c 1 -W 5 1.1.1.1 >/dev/null 2
             echo "Warning: apt update failed despite network connectivity"
             echo "Falling back to cached package lists"
         fi
-else
+    else
         echo "No network connectivity detected, using cached package lists"
+    fi
 fi
 
 # Global variable to track background processes