docker-entrypoint.sh

#!/bin/bash

# Docker entrypoint script for SpeedCam application
# This script handles OpenCV library loading in the Linux container environment

set -e

echo "Starting SpeedCam application in container..."

# Look for OpenCV native libraries in various locations
OPENCV_LIB_PATH=""
for path in "/usr/local/lib64" "/usr/local/lib" "/usr/lib" "/usr/lib/x86_64-linux-gnu"; do
    if [ -d "$path" ] && [ -n "$(find "$path" -name "libopencv_core.so*" 2>/dev/null)" ]; then
        OPENCV_LIB_PATH="$path:$OPENCV_LIB_PATH"
    fi
done

# Look for OpenCV Java library specifically
OPENCV_JAVA_LIB=""
for path in "/usr/lib/jni" "/usr/local/lib64" "/usr/local/lib" "/usr/lib" "/usr/lib/x86_64-linux-gnu"; do
    if [ -d "$path" ]; then
        JAVA_LIB=$(find "$path" -name "libopencv_java*.so" 2>/dev/null | head -1)
        if [ -n "$JAVA_LIB" ]; then
            OPENCV_JAVA_LIB="$JAVA_LIB"
            echo "Found OpenCV Java library: $OPENCV_JAVA_LIB"
            # Add JNI path to library path
            OPENCV_LIB_PATH="$path:$OPENCV_LIB_PATH"
            break
        fi
    fi
done

if [ -n "$OPENCV_LIB_PATH" ]; then
    echo "Found OpenCV libraries in: $OPENCV_LIB_PATH"
    export LD_LIBRARY_PATH="$OPENCV_LIB_PATH:$LD_LIBRARY_PATH"
else
    echo "Warning: No OpenCV native libraries found"
fi

# Set system properties for OpenCV loading
if [ -n "$OPENCV_JAVA_LIB" ]; then
    echo "Using system OpenCV Java library"
    JAVA_OPTS="$JAVA_OPTS -Duse.system.opencv=true -Djava.library.path=$LD_LIBRARY_PATH"
else
    echo "No OpenCV Java library found, will attempt to use bundled version"
    JAVA_OPTS="$JAVA_OPTS -Djava.library.path=$LD_LIBRARY_PATH"
fi

echo "Java library path: $LD_LIBRARY_PATH"
echo "Starting application..."

# Execute the Java application  
exec java $JAVA_OPTS -cp "./target/speedcam-0.1-jar-with-dependencies.jar" com.pinealpha.SpeedDetect "$@"