Update Dockerfile

Dockerfile

@@ -12,7 +12,13 @@ RUN apt-get update && \
     npm install opencv-build && \
     npm install opencv4nodejs && \
     npm config set opencv4nodejs:customBuildFlags "" && \
-    npm rebuild opencv4nodejs
+    npm rebuild opencv4nodejs && \
+    echo "Installation completed successfully!" && \
+    npm --version && \
+    node --version && \
+    cmake --version && \
+    pkg-config --modversion opencv && \
+    gcc --version
 
 # 暴露端口
 EXPOSE 7860