Initial commit: build env for the Ubtouch OS

Change-Id: I4bf8c32811d2785bd86a532f4cb435794f5c14d2

docker-entrypoint.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+set -euo pipefail
+
+# Function to log messages with timestamp
+log() {
+    echo "[$(date +'%Y-%m-%d %H:%M:%S')] $*" >&2
+}
+
+# Function to handle cleanup on exit
+cleanup() {
+    local exit_code=$?
+    if [ $exit_code -ne 0 ]; then
+        log "Build process exited with code: $exit_code"
+        # Optional: Save ccache stats on failure
+        if command -v ccache >/dev/null 2>&1; then
+            log "Final ccache stats:"
+            ccache -s
+        fi
+    fi
+}
+
+# Set up signal handlers
+trap cleanup EXIT
+trap 'log "Received SIGTERM, shutting down gracefully..."; exit 143' TERM
+trap 'log "Received SIGINT, shutting down gracefully..."; exit 130' INT
+
+# Initialize environment
+log "Initializing build environment for user: $(whoami)"
+
+# Ensure proper ownership of workspace
+if [ -d "/workspace" ] && [ -w "/workspace" ]; then
+    log "Workspace permissions verified"
+else
+    log "Warning: Workspace permissions may be incorrect"
+fi
+
+# Display ccache status
+if command -v ccache >/dev/null 2>&1; then
+    log "ccache status:"
+    ccache -s
+fi
+
+# Display Python versions
+if command -v python3 >/dev/null 2>&1; then
+    log "Python 3 version: $(python3 --version 2>&1)"
+fi
+
+if command -v python2 >/dev/null 2>&1; then
+    log "Python 2 version: $(python2 --version 2>&1)"
+fi
+
+if command -v python >/dev/null 2>&1; then
+    log "Python version: $(python --version 2>&1)"
+fi
+
+# Display system info for debugging
+log "System info - Cores: $(nproc), Memory: $(free -h | awk '/^Mem:/ {print $2}')"
+
+# Set optimal make flags if not already set
+if [ -z "${MAKEFLAGS:-}" ]; then
+    export MAKEFLAGS="-j$(nproc)"
+    log "Set MAKEFLAGS to: $MAKEFLAGS"
+fi
+
+# If no arguments provided, start interactive bash
+if [ $# -eq 0 ]; then
+    log "Starting interactive bash session"
+    exec /bin/bash
+fi
+
+# Define log file path
+BUILD_LOG="/workspace/build.log"
+
+# Clean previous logs
+: > "$BUILD_LOG"   # This truncates the file without deleting it
+# Or, alternatively: rm -f "$BUILD_LOG" && touch "$BUILD_LOG"
+
+log "Executing command: $*"
+
+# Run command, tee stdout/stderr to build.log and still display in docker logs
+"$@" > >(tee -a "$BUILD_LOG") 2> >(tee -a "$BUILD_LOG" >&2)
+exit_code=$?
+
+log "Command exited with code $exit_code"
+exit $exit_code